diff --git a/smithy/model/article/article-apis.smithy b/smithy/model/article/article-apis.smithy
new file mode 100644
index 0000000..a21b3a9
--- /dev/null
+++ b/smithy/model/article/article-apis.smithy
@@ -0,0 +1,78 @@
+$version: "2"
+
+namespace shopping.inandout.article
+
+use shopping.inandout#DeleteRestrictedError
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#PositiveDouble
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#UUID
+use shopping.inandout.product#ProductSummary
+
+resource Article {
+    identifiers: {
+        articleId: UUID
+    }
+    properties: {
+        productSummary: ProductSummary
+        brandId: UUID
+        price: PositiveDouble
+        currency: String
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+    create: CreateArticle
+    read: GetArticle
+    update: UpdateArticle
+    delete: DeleteArticle
+}
+
+@http(method: "POST", uri: "/brands/{brandId}/articles")
+operation CreateArticle {
+    input: CreateArticleInput
+    output: CreateArticleOutput
+    errors: [
+        InvalidInputError
+        ResourceAlreadyExistsError
+        InternalServerError
+    ]
+}
+
+@readonly
+@http(method: "GET", uri: "/brands/{brandId}/articles/{articleId}")
+operation GetArticle {
+    input: GetArticleInput
+    output: GetArticleOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@http(method: "PATCH", uri: "/brands/{brandId}/articles/{articleId}")
+operation UpdateArticle {
+    input: UpdateArticleInput
+    output: UpdateArticleOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@idempotent
+@http(method: "DELETE", uri: "/brands/{brandId}/articles/{articleId}")
+@documentation("Restricted cascading operation, references for stands should NOT exist")
+operation DeleteArticle {
+    input: DeleteArticleInput
+    output: DeleteArticleOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        DeleteRestrictedError
+        InternalServerError
+    ]
+}
diff --git a/smithy/model/article/article-io.smithy b/smithy/model/article/article-io.smithy
new file mode 100644
index 0000000..b45b8a2
--- /dev/null
+++ b/smithy/model/article/article-io.smithy
@@ -0,0 +1,60 @@
+$version: "2"
+
+namespace shopping.inandout.article
+
+use shopping.inandout#BrandIdMixin
+use shopping.inandout#PositiveDouble
+use shopping.inandout#UUID
+use shopping.inandout.product#CreateProductInput
+use shopping.inandout.product#Product
+
+@references([
+    {
+        resource: Product
+    }
+])
+structure CreateArticleInput with [BrandIdMixin, ArticleInputMixin] {
+    @required
+    price: PositiveDouble
+
+    // Clients must choose between providing a product id/details.
+    // Not none, not both, one field must be filled.
+    @notProperty
+    @documentation("Existing product referenced in a new article")
+    productId: UUID
+
+    @notProperty
+    @documentation("Creates a new product")
+    createProductInput: CreateProductInput
+}
+
+structure CreateArticleOutput {
+    @required
+    articleId: UUID
+}
+
+structure GetArticleInput with [BrandIdMixin] {
+    @required
+    @httpLabel
+    articleId: UUID
+}
+
+structure GetArticleOutput with [ArticleOutputMixin] {}
+
+structure UpdateArticleInput with [BrandIdMixin, ArticleInputMixin] {
+    @required
+    @httpLabel
+    articleId: UUID
+
+    price: PositiveDouble
+}
+
+structure UpdateArticleOutput with [ArticleOutputMixin] {}
+
+structure DeleteArticleInput with [BrandIdMixin] {
+    @required
+    @httpLabel
+    articleId: UUID
+}
+
+structure DeleteArticleOutput {}
diff --git a/smithy/model/article/article-types.smithy b/smithy/model/article/article-types.smithy
new file mode 100644
index 0000000..2d01a1d
--- /dev/null
+++ b/smithy/model/article/article-types.smithy
@@ -0,0 +1,42 @@
+$version: "2"
+
+namespace shopping.inandout.article
+
+use shopping.inandout#AuditMetadata
+use shopping.inandout#PositiveDouble
+use shopping.inandout#UUID
+use shopping.inandout.brand#Brand
+use shopping.inandout.product#ProductSummary
+
+@mixin
+structure ArticleMixin {
+    currency: String
+}
+
+@mixin
+structure ArticleInputMixin with [ArticleMixin] {}
+
+@mixin
+@references([
+    {
+        resource: Brand
+    }
+    {
+        resource: Article
+    }
+])
+structure ArticleOutputMixin with [AuditMetadata, ArticleMixin] {
+    @required
+    brandId: UUID
+
+    @required
+    articleId: UUID
+
+    @required
+    productSummary: ProductSummary
+
+    @required
+    price: PositiveDouble
+}
+
+structure ArticleSummary with [ArticleOutputMixin] {}
diff --git a/smithy/model/brand/brand-apis.smithy b/smithy/model/brand/brand-apis.smithy
index 749ad33..18a68bb 100644
--- a/smithy/model/brand/brand-apis.smithy
+++ b/smithy/model/brand/brand-apis.smithy
@@ -1,15 +1,15 @@
 $version: "2"
 
-namespace com.shopping.inandout.brand
+namespace shopping.inandout.brand
 
-use com.shopping.inandout#DeleteRestrictedError
-use com.shopping.inandout#ImageUrl
-use com.shopping.inandout#InternalServerError
-use com.shopping.inandout#InvalidInputError
-use com.shopping.inandout#ResourceAlreadyExistsError
-use com.shopping.inandout#ResourceName
-use com.shopping.inandout#ResourceNotFoundError
-use com.shopping.inandout#UUID
+use shopping.inandout#DeleteRestrictedError
+use shopping.inandout#ImageUrl
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceName
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#UUID
 
 resource Brand {
     identifiers: {
@@ -30,7 +30,7 @@ resource Brand {
 @http(method: "POST", uri: "/brands")
 operation CreateBrand {
     input: CreateBrandInput
-    output: BrandSummary
+    output: CreateBrandOutput
     errors: [
         InvalidInputError
         ResourceAlreadyExistsError
@@ -42,7 +42,7 @@ operation CreateBrand {
 @http(method: "GET", uri: "/brands/{brandId}")
 operation GetBrand {
     input: GetBrandInput
-    output: BrandSummary
+    output: GetBrandOutput
     errors: [
         InvalidInputError
         ResourceNotFoundError
@@ -53,7 +53,7 @@ operation GetBrand {
 @http(method: "PATCH", uri: "/brands/{brandId}")
 operation UpdateBrand {
     input: UpdateBrandInput
-    output: BrandSummary
+    output: UpdateBrandOutput
     errors: [
         InvalidInputError
         ResourceNotFoundError
@@ -66,7 +66,7 @@ operation UpdateBrand {
 @documentation("Restricted cascading operation, references for stores and articles should NOT exist")
 operation DeleteBrand {
     input: DeleteBrandInput
-    output: BrandSummary
+    output: DeleteBrandOutput
     errors: [
         InvalidInputError
         ResourceNotFoundError
diff --git a/smithy/model/brand/brand-io.smithy b/smithy/model/brand/brand-io.smithy
index 1e77ef9..cc39439 100644
--- a/smithy/model/brand/brand-io.smithy
+++ b/smithy/model/brand/brand-io.smithy
@@ -1,16 +1,18 @@
 $version: "2"
 
-namespace com.shopping.inandout.brand
+namespace shopping.inandout.brand
 
-use com.shopping.inandout#ImageUrl
-use com.shopping.inandout#ResourceName
-use com.shopping.inandout#UUID
+use shopping.inandout#ResourceName
+use shopping.inandout#UUID
 
-structure CreateBrandInput {
+structure CreateBrandInput with [BrandInputMixin] {
     @required
     name: ResourceName
+}
 
-    logoUrl: ImageUrl
+structure CreateBrandOutput {
+    @required
+    brandId: UUID
 }
 
 structure GetBrandInput {
@@ -19,18 +21,22 @@ structure GetBrandInput {
     brandId: UUID
 }
 
-structure UpdateBrandInput {
+structure GetBrandOutput with [BrandOutputMixin] {}
+
+structure UpdateBrandInput with [BrandInputMixin] {
     @required
     @httpLabel
     brandId: UUID
 
     name: ResourceName
-
-    logoUrl: ImageUrl
 }
 
+structure UpdateBrandOutput with [BrandOutputMixin] {}
+
 structure DeleteBrandInput {
     @required
     @httpLabel
     brandId: UUID
 }
+
+structure DeleteBrandOutput {}
diff --git a/smithy/model/brand/brand-types.smithy b/smithy/model/brand/brand-types.smithy
index 04f8cbc..51c17ca 100644
--- a/smithy/model/brand/brand-types.smithy
+++ b/smithy/model/brand/brand-types.smithy
@@ -1,23 +1,32 @@
 $version: "2"
 
-namespace com.shopping.inandout.brand
+namespace shopping.inandout.brand
 
-use com.shopping.inandout#ImageUrl
-use com.shopping.inandout#ResourceName
-use com.shopping.inandout#UUID
-
-structure BrandSummary {
-    @required
-    brandId: UUID
-
-    @required
-    name: ResourceName
+use shopping.inandout#AuditMetadata
+use shopping.inandout#ImageUrl
+use shopping.inandout#ResourceName
+use shopping.inandout#UUID
 
+@mixin
+structure BrandMixin {
     logoUrl: ImageUrl
+}
+
+@mixin
+structure BrandInputMixin with [BrandMixin] {}
 
+@mixin
+@references([
+    {
+        resource: Brand
+    }
+])
+structure BrandOutputMixin with [AuditMetadata, BrandMixin] {
     @required
-    createdAt: Timestamp
+    brandId: UUID
 
     @required
-    updatedAt: Timestamp
+    name: ResourceName
 }
+
+structure BrandSummary with [BrandOutputMixin] {}
diff --git a/smithy/model/common.smithy b/smithy/model/common.smithy
index 34d0b92..9334b0c 100644
--- a/smithy/model/common.smithy
+++ b/smithy/model/common.smithy
@@ -17,3 +17,100 @@ string ResourceName
 @pattern("^https?://[a-zA-Z0-9\\-._~:/?#\\[\\]@!$&'()*+,;=%]+\\.(jpg|jpeg|png|gif)$")
 @length(min: 8, max: 255)
 string ImageUrl
+
+@pattern("^[a-zA-Z0-9\\-, ]+$")
+@length(min: 8, max: 255)
+string Description
+
+// All UTC offsets fall between this interval: [-12, 14].
+// See: https://en.wikipedia.org/wiki/List_of_UTC_offsets.
+@range(min: -12, max: 14)
+integer UTCTimezone
+
+@range(min: 0, max: 59)
+integer Minute
+
+@range(min: 0, max: 23)
+integer Hour
+
+@range(min: -180, max: 180)
+double Longitude
+
+@range(min: -90, max: 90)
+double Latitude
+
+@range(min: 0, max: 100)
+double Percentage
+
+@range(min: 0)
+integer NaturalNumber
+
+@range(min: 0)
+double PositiveDouble
+
+enum DayType {
+    MON = "MON"
+    TUE = "TUE"
+    WED = "WED"
+    THU = "THU"
+    FRI = "FRI"
+    SAT = "SAT"
+    SUN = "SUN"
+}
+
+structure Time {
+    @required
+    hour: Hour
+
+    @required
+    minute: Minute
+}
+
+structure TimeRange {
+    @required
+    begin: Time
+
+    @required
+    end: Time
+}
+
+@mixin
+structure AuditMetadata {
+    @required
+    createdAt: Timestamp
+
+    @required
+    updatedAt: Timestamp
+}
+
+@mixin
+resource AuditedResource {
+    properties: {
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+}
+
+@mixin
+@documentation("Parameters sent by the client to control pagination of the list results")
+structure InputPagination {
+    @httpQuery("nextToken")
+    @documentation("An id used to retrieve the next page of results; leave empty for the first request")
+    nextToken: String
+
+    @httpQuery("pageSize")
+    @default(100)
+    @documentation("The maximum number of items the client is requesting to be returned in this page")
+    pageSize: NaturalNumber
+}
+
+@mixin
+@documentation("Metadata returned to the client to assist in navigating paginated results")
+structure OutputPagination {
+    @documentation("An id to be passed in the subsequent request to retrieve the next page; null if no more pages exist")
+    nextToken: String
+
+    @required
+    @documentation("The actual number of items returned in the current response page.")
+    tokenCount: NaturalNumber
+}
diff --git a/smithy/model/main.smithy b/smithy/model/main.smithy
index 4e67665..c5b925d 100644
--- a/smithy/model/main.smithy
+++ b/smithy/model/main.smithy
@@ -3,14 +3,25 @@ $version: "2"
 namespace com.shopping.inandout
 
 use aws.protocols#restJson1
-use com.shopping.inandout.brand#Brand
-use com.shopping.inandout.tsp#FindTspSolution
+use shopping.inandout.tsp#FindTspSolution
+use shopping.inandout.article#Article
+use shopping.inandout.brand#Brand
+use shopping.inandout.offer#Offer
+use shopping.inandout.product#Product
+use shopping.inandout.stand#Stand
+use shopping.inandout.store#Store
+use shopping.inandout.tsp#FindTspSolution
 
 @restJson1
 service InAndOut {
     version: "2026-04-01"
     resources: [
+        Store
         Brand
+        Stand
+        Article
+        Product
+        Offer
     ]
     operations: [
         FindTspSolution
diff --git a/smithy/model/offer/offer-apis.smithy b/smithy/model/offer/offer-apis.smithy
new file mode 100644
index 0000000..8b6d2e0
--- /dev/null
+++ b/smithy/model/offer/offer-apis.smithy
@@ -0,0 +1,95 @@
+$version: "2"
+
+namespace shopping.inandout.offer
+
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#NaturalNumber
+use shopping.inandout#Percentage
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#TimeRange
+use shopping.inandout#UUID
+use shopping.inandout#UUIDList
+
+// Does NOT contain the store data, only its id is necessary for logical grouping.
+resource Offer {
+    identifiers: {
+        offerId: UUID
+    }
+    properties: {
+        storeId: UUID
+        percentage: Percentage
+        articleIdList: UUIDList
+        dependencyList: DependencyList
+        timeRange: TimeRange
+        lifetime: NaturalNumber
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+    create: CreateOffer
+    read: GetOffer
+    list: ListOffers
+    update: UpdateOffer
+    delete: DeleteOffer
+}
+
+@http(method: "POST", uri: "/stores/{storeId}/offers")
+operation CreateOffer {
+    input: CreateOfferInput
+    output: CreateOfferOutput
+    errors: [
+        InvalidInputError
+        ResourceAlreadyExistsError
+        InternalServerError
+    ]
+}
+
+@readonly
+@http(method: "GET", uri: "/stores/{storeId}/offers/{offerId}")
+operation GetOffer {
+    input: GetOfferInput
+    output: GetOfferOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@readonly
+@paginated
+@http(method: "GET", uri: "/stores/{storeId}/offers")
+operation ListOffers {
+    input: ListOffersInput
+    output: ListOffersOutput
+    errors: [
+        InvalidInputError
+        InternalServerError
+    ]
+}
+
+@http(method: "PATCH", uri: "/stores/{storeId}/offers/{offerId}")
+@documentation("Non-idempotent cascading operation, creates/deletes internal resources as needed")
+operation UpdateOffer {
+    input: UpdateOfferInput
+    output: UpdateOfferOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@idempotent
+@http(method: "DELETE", uri: "/stores/{storeId}/offers/{offerId}")
+@documentation("Not restricted cascading operation, deletes discounts, dependencies, etc.")
+operation DeleteOffer {
+    input: DeleteOfferInput
+    output: DeleteOfferOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
diff --git a/smithy/model/offer/offer-io.smithy b/smithy/model/offer/offer-io.smithy
new file mode 100644
index 0000000..4fb5407
--- /dev/null
+++ b/smithy/model/offer/offer-io.smithy
@@ -0,0 +1,52 @@
+$version: "2"
+
+namespace shopping.inandout.offer
+
+use shopping.inandout#InputPagination
+use shopping.inandout#OutputPagination
+use shopping.inandout#Percentage
+use shopping.inandout#StoreIdMixin
+use shopping.inandout#UUID
+
+structure CreateOfferInput with [StoreIdMixin, OfferInputMixin] {
+    @required
+    percentage: Percentage
+}
+
+structure CreateOfferOutput {
+    @required
+    offerId: UUID
+}
+
+structure GetOfferInput with [StoreIdMixin] {
+    @required
+    @httpLabel
+    offerId: UUID
+}
+
+structure GetOfferOutput with [OfferOutputMixin] {}
+
+structure ListOffersInput with [StoreIdMixin, InputPagination] {}
+
+structure ListOffersOutput with [OutputPagination] {
+    @required
+    tokens: OfferSummaryList
+}
+
+structure UpdateOfferInput with [StoreIdMixin, OfferInputMixin] {
+    @required
+    @httpLabel
+    offerId: UUID
+
+    percentage: Percentage
+}
+
+structure UpdateOfferOutput with [OfferOutputMixin] {}
+
+structure DeleteOfferInput with [StoreIdMixin] {
+    @required
+    @httpLabel
+    offerId: UUID
+}
+
+structure DeleteOfferOutput {}
diff --git a/smithy/model/offer/offer-types.smithy b/smithy/model/offer/offer-types.smithy
new file mode 100644
index 0000000..41f78d7
--- /dev/null
+++ b/smithy/model/offer/offer-types.smithy
@@ -0,0 +1,61 @@
+$version: "2"
+
+namespace shopping.inandout.offer
+
+use shopping.inandout#AuditMetadata
+use shopping.inandout#NaturalNumber
+use shopping.inandout#Percentage
+use shopping.inandout#TimeRange
+use shopping.inandout#UUID
+use shopping.inandout#UUIDList
+use shopping.inandout.article#Article
+use shopping.inandout.store#Store
+
+list DependencyList {
+    member: Dependency
+}
+
+@references([
+    {
+        resource: Article
+    }
+])
+@documentation("Product dependency; it must be bought in order for the offer to activate")
+structure Dependency {
+    articleId: UUID
+    quantity: NaturalNumber
+}
+
+@mixin
+structure OfferMixin {
+    articleIdList: UUIDList
+    dependencyList: DependencyList
+    timeRange: TimeRange
+    lifetime: NaturalNumber
+}
+
+@mixin
+structure OfferInputMixin with [OfferMixin] {}
+
+@mixin
+@references([
+    {
+        resource: Store
+    }
+])
+structure OfferOutputMixin with [AuditMetadata, OfferMixin] {
+    @required
+    storeId: UUID
+
+    @required
+    offerId: UUID
+
+    @required
+    percentage: Percentage
+}
+
+structure OfferSummary with [OfferOutputMixin] {}
+
+list OfferSummaryList {
+    member: OfferSummary
+}
diff --git a/smithy/model/product/product-apis.smithy b/smithy/model/product/product-apis.smithy
new file mode 100644
index 0000000..a182bdc
--- /dev/null
+++ b/smithy/model/product/product-apis.smithy
@@ -0,0 +1,81 @@
+$version: "2"
+
+namespace shopping.inandout.product
+
+use shopping.inandout#DeleteRestrictedError
+use shopping.inandout#Description
+use shopping.inandout#ImageUrl
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceName
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#UUID
+
+resource Product {
+    identifiers: {
+        productId: UUID
+    }
+    properties: {
+        name: ResourceName
+        subcategory: ResourceName
+        category: ResourceName
+        vendor: ResourceName
+        imageUrl: ImageUrl
+        description: Description
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+    create: CreateProduct
+    read: GetProduct
+    update: UpdateProduct
+    delete: DeleteProduct
+}
+
+@http(method: "POST", uri: "/products")
+operation CreateProduct {
+    input: CreateProductInput
+    output: CreateProductOutput
+    errors: [
+        InvalidInputError
+        ResourceAlreadyExistsError
+        InternalServerError
+    ]
+}
+
+@readonly
+@http(method: "GET", uri: "/products/{productId}")
+operation GetProduct {
+    input: GetProductInput
+    output: GetProductOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@http(method: "PATCH", uri: "/products/{productId}")
+operation UpdateProduct {
+    input: UpdateProductInput
+    output: UpdateProductOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@idempotent
+@http(method: "DELETE", uri: "/products/{productId}")
+@documentation("Restricted cascading operation, references for articles should NOT exist")
+operation DeleteProduct {
+    input: DeleteProductInput
+    output: DeleteProductOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        DeleteRestrictedError
+        InternalServerError
+    ]
+}
diff --git a/smithy/model/product/product-io.smithy b/smithy/model/product/product-io.smithy
new file mode 100644
index 0000000..7ff40fa
--- /dev/null
+++ b/smithy/model/product/product-io.smithy
@@ -0,0 +1,52 @@
+$version: "2"
+
+namespace shopping.inandout.product
+
+use shopping.inandout#ResourceName
+use shopping.inandout#UUID
+
+structure CreateProductInput with [ProductInputMixin] {
+    @required
+    name: ResourceName
+
+    @required
+    subcategory: ResourceName
+
+    @required
+    category: ResourceName
+}
+
+structure CreateProductOutput {
+    @required
+    productId: UUID
+}
+
+structure GetProductInput {
+    @required
+    @httpLabel
+    productId: UUID
+}
+
+structure GetProductOutput with [ProductOutputMixin] {}
+
+structure UpdateProductInput with [ProductInputMixin] {
+    @required
+    @httpLabel
+    productId: UUID
+
+    name: ResourceName
+
+    subcategory: ResourceName
+
+    category: ResourceName
+}
+
+structure UpdateProductOutput with [ProductOutputMixin] {}
+
+structure DeleteProductInput {
+    @required
+    @httpLabel
+    productId: UUID
+}
+
+structure DeleteProductOutput {}
diff --git a/smithy/model/product/product-types.smithy b/smithy/model/product/product-types.smithy
new file mode 100644
index 0000000..28c3c9d
--- /dev/null
+++ b/smithy/model/product/product-types.smithy
@@ -0,0 +1,41 @@
+$version: "2"
+
+namespace shopping.inandout.product
+
+use shopping.inandout#AuditMetadata
+use shopping.inandout#Description
+use shopping.inandout#ImageUrl
+use shopping.inandout#ResourceName
+use shopping.inandout#UUID
+
+@mixin
+structure ProductMixin {
+    vendor: ResourceName
+    imageUrl: ImageUrl
+    description: Description
+}
+
+@mixin
+structure ProductInputMixin with [ProductMixin] {}
+
+@mixin
+@references([
+    {
+        resource: Product
+    }
+])
+structure ProductOutputMixin with [AuditMetadata, ProductMixin] {
+    @required
+    productId: UUID
+
+    @required
+    name: ResourceName
+
+    @required
+    subcategory: ResourceName
+
+    @required
+    category: ResourceName
+}
+
+structure ProductSummary with [ProductOutputMixin] {}
diff --git a/smithy/model/stand/stand-apis.smithy b/smithy/model/stand/stand-apis.smithy
new file mode 100644
index 0000000..cf15348
--- /dev/null
+++ b/smithy/model/stand/stand-apis.smithy
@@ -0,0 +1,87 @@
+$version: "2"
+
+namespace shopping.inandout.stand
+
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#PositiveDouble
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#UUID
+use shopping.inandout.article#ArticleSummary
+
+resource Stand {
+    identifiers: {
+        standId: UUID
+    }
+    properties: {
+        edgeId: UUID
+        sourceNodeDistance: PositiveDouble
+        articleSummary: ArticleSummary
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+    create: CreateStand
+    read: GetStand
+    list: ListStands
+    update: UpdateStand
+    delete: DeleteStand
+}
+
+@http(method: "POST", uri: "/stores/{storeId}/stands")
+operation CreateStand {
+    input: CreateStandInput
+    output: CreateStandOutput
+    errors: [
+        InvalidInputError
+        ResourceAlreadyExistsError
+        InternalServerError
+    ]
+}
+
+@readonly
+@http(method: "GET", uri: "/stores/{storeId}/stands/{standId}")
+operation GetStand {
+    input: GetStandInput
+    output: GetStandOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@readonly
+@paginated
+@http(method: "GET", uri: "/stores/{storeId}/stands")
+operation ListStands {
+    input: ListStandsInput
+    output: ListStandsOutput
+    errors: [
+        InvalidInputError
+        InternalServerError
+    ]
+}
+
+@http(method: "PATCH", uri: "/stores/{storeId}/stands/{standId}")
+operation UpdateStand {
+    input: UpdateStandInput
+    output: UpdateStandOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@idempotent
+@http(method: "DELETE", uri: "/stores/{storeId}/stands/{standId}")
+operation DeleteStand {
+    input: DeleteStandInput
+    output: DeleteStandOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
diff --git a/smithy/model/stand/stand-io.smithy b/smithy/model/stand/stand-io.smithy
new file mode 100644
index 0000000..05447e3
--- /dev/null
+++ b/smithy/model/stand/stand-io.smithy
@@ -0,0 +1,85 @@
+$version: "2"
+
+namespace shopping.inandout.stand
+
+use shopping.inandout#InputPagination
+use shopping.inandout#OutputPagination
+use shopping.inandout#PositiveDouble
+use shopping.inandout#StoreIdMixin
+use shopping.inandout#UUID
+use shopping.inandout.article#Article
+use shopping.inandout.article#CreateArticleInput
+
+@references([
+    {
+        resource: Article
+    }
+])
+structure CreateStandInput with [StoreIdMixin] {
+    @required
+    edgeId: UUID
+
+    @required
+    sourceNodeDistance: PositiveDouble
+
+    // Clients must choose between providing an article id/details.
+    // Not none, not both, one field must be filled.
+    @notProperty
+    @documentation("Existing article referenced in a new stand")
+    articleId: UUID
+
+    @notProperty
+    @documentation("Creates a new article")
+    createArticleInput: CreateArticleInput
+}
+
+structure CreateStandOutput {
+    @required
+    standId: UUID
+}
+
+structure GetStandInput with [StoreIdMixin] {
+    @required
+    @httpLabel
+    standId: UUID
+}
+
+structure GetStandOutput with [StandOutputMixin] {}
+
+@references([
+    {
+        resource: Article
+    }
+])
+structure ListStandsInput with [StoreIdMixin, InputPagination] {
+    @httpQuery("edgeId")
+    edgeId: UUID
+
+    @httpQuery("articleId")
+    articleId: UUID
+}
+
+structure ListStandsOutput with [OutputPagination] {
+    @required
+    tokens: StandSummaryList
+}
+
+structure UpdateStandInput with [StoreIdMixin] {
+    @required
+    @httpLabel
+    standId: UUID
+
+    edgeId: UUID
+
+    sourceNodeDistance: PositiveDouble
+}
+
+structure UpdateStandOutput with [StandOutputMixin] {}
+
+structure DeleteStandInput with [StoreIdMixin] {
+    @required
+    @httpLabel
+    standId: UUID
+}
+
+structure DeleteStandOutput {}
diff --git a/smithy/model/stand/stand-types.smithy b/smithy/model/stand/stand-types.smithy
new file mode 100644
index 0000000..bbc86b2
--- /dev/null
+++ b/smithy/model/stand/stand-types.smithy
@@ -0,0 +1,29 @@
+$version: "2"
+
+namespace shopping.inandout.stand
+
+use shopping.inandout#AuditMetadata
+use shopping.inandout#PositiveDouble
+use shopping.inandout#UUID
+use shopping.inandout.article#ArticleSummary
+
+@mixin
+structure StandOutputMixin with [AuditMetadata] {
+    @required
+    standId: UUID
+
+    @required
+    edgeId: UUID
+
+    @required
+    sourceNodeDistance: PositiveDouble
+
+    @required
+    articleSummary: ArticleSummary
+}
+
+structure StandSummary with [StandOutputMixin] {}
+
+list StandSummaryList {
+    member: StandSummary
+}
diff --git a/smithy/model/store/store-apis.smithy b/smithy/model/store/store-apis.smithy
new file mode 100644
index 0000000..928268e
--- /dev/null
+++ b/smithy/model/store/store-apis.smithy
@@ -0,0 +1,104 @@
+$version: "2"
+
+namespace shopping.inandout.store
+
+use shopping.inandout#Description
+use shopping.inandout#ImageUrl
+use shopping.inandout#InternalServerError
+use shopping.inandout#InvalidInputError
+use shopping.inandout#Latitude
+use shopping.inandout#Longitude
+use shopping.inandout#NaturalNumber
+use shopping.inandout#ResourceAlreadyExistsError
+use shopping.inandout#ResourceName
+use shopping.inandout#ResourceNotFoundError
+use shopping.inandout#UTCTimezone
+use shopping.inandout#UUID
+use shopping.inandout.brand#BrandSummary
+
+resource Store {
+    identifiers: {
+        storeId: UUID
+    }
+    properties: {
+        name: ResourceName
+        brandSummary: BrandSummary
+        description: Description
+        imageUrl: ImageUrl
+        timezone: UTCTimezone
+        operatingHoursMap: OperatingHoursMap
+        locationMapping: LocationMapping
+        mappingVersion: NaturalNumber
+        longitude: Longitude
+        latitude: Latitude
+        createdAt: Timestamp
+        updatedAt: Timestamp
+    }
+    create: CreateStore
+    read: GetStore
+    list: ListStores
+    update: UpdateStore
+    delete: DeleteStore
+}
+
+@http(method: "POST", uri: "/stores")
+operation CreateStore {
+    input: CreateStoreInput
+    output: CreateStoreOutput
+    errors: [
+        InvalidInputError
+        ResourceAlreadyExistsError
+        InternalServerError
+    ]
+}
+
+@readonly
+@http(method: "GET", uri: "/stores/{storeId}")
+@documentation("Returns additional brand details in order to avoid multiple network round-trips")
+operation GetStore {
+    input: GetStoreInput
+    output: GetStoreOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@readonly
+@paginated
+@http(method: "GET", uri: "/stores")
+@documentation("Returns additional brand details in order to avoid multiple network round-trips")
+operation ListStores {
+    input: ListStoresInput
+    output: ListStoresOutput
+    errors: [
+        InvalidInputError
+        InternalServerError
+    ]
+}
+
+@http(method: "PATCH", uri: "/stores/{storeId}")
+@documentation("Non-idempotent cascading operation, creates/deletes internal resources as needed")
+operation UpdateStore {
+    input: UpdateStoreInput
+    output: UpdateStoreOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
+
+@idempotent
+@http(method: "DELETE", uri: "/stores/{storeId}")
+@documentation("Not restricted cascading operation, deletes floors, stands, etc.")
+operation DeleteStore {
+    input: DeleteStoreInput
+    output: DeleteStoreOutput
+    errors: [
+        InvalidInputError
+        ResourceNotFoundError
+        InternalServerError
+    ]
+}
diff --git a/smithy/model/store/store-io.smithy b/smithy/model/store/store-io.smithy
new file mode 100644
index 0000000..1c62f76
--- /dev/null
+++ b/smithy/model/store/store-io.smithy
@@ -0,0 +1,79 @@
+$version: "2"
+
+namespace shopping.inandout.store
+
+use shopping.inandout#InputPagination
+use shopping.inandout#Latitude
+use shopping.inandout#Longitude
+use shopping.inandout#NaturalNumber
+use shopping.inandout#OutputPagination
+use shopping.inandout#ResourceName
+use shopping.inandout#UUID
+use shopping.inandout.brand#Brand
+
+// The creation of the brand is independent of the creation of the store.
+@references([
+    {
+        resource: Brand
+    }
+])
+structure CreateStoreInput with [StoreInputMixin] {
+    @required
+    @notProperty
+    brandId: UUID
+}
+
+structure CreateStoreOutput {
+    @required
+    storeId: UUID
+}
+
+structure GetStoreInput {
+    @required
+    @httpLabel
+    storeId: UUID
+}
+
+structure GetStoreOutput with [StoreOutputMixin] {}
+
+@documentation("Retrieve a list of stores based on the provided queries")
+structure ListStoresInput with [InputPagination] {
+    @httpQuery("name")
+    name: ResourceName
+
+    @httpQuery("userLongitude")
+    userLongitude: Longitude
+
+    @httpQuery("userLatitude")
+    userLatitude: Latitude
+
+    // ! User location must be provided in order for the below queries to work.
+    @httpQuery("isOpen")
+    @documentation("Based on user location, his timezone is computed and then the list of open markets")
+    isOpen: Boolean
+
+    @httpQuery("maxDistance")
+    @documentation("Distance measured in kilometers")
+    maxDistance: NaturalNumber
+}
+
+structure ListStoresOutput with [OutputPagination] {
+    @required
+    tokens: StoreSummaryList
+}
+
+structure UpdateStoreInput with [StoreInputMixin] {
+    @required
+    @httpLabel
+    storeId: UUID
+}
+
+structure UpdateStoreOutput with [StoreOutputMixin] {}
+
+structure DeleteStoreInput {
+    @required
+    @httpLabel
+    storeId: UUID
+}
+
+structure DeleteStoreOutput {}
diff --git a/smithy/model/store/store-types.smithy b/smithy/model/store/store-types.smithy
new file mode 100644
index 0000000..d236f30
--- /dev/null
+++ b/smithy/model/store/store-types.smithy
@@ -0,0 +1,107 @@
+$version: "2"
+
+namespace shopping.inandout.store
+
+use shopping.inandout#AuditMetadata
+use shopping.inandout#DayType
+use shopping.inandout#Description
+use shopping.inandout#ImageUrl
+use shopping.inandout#Latitude
+use shopping.inandout#Longitude
+use shopping.inandout#NaturalNumber
+use shopping.inandout#ResourceName
+use shopping.inandout#TimeRange
+use shopping.inandout#UTCTimezone
+use shopping.inandout#UUID
+use shopping.inandout.brand#BrandSummary
+
+map OperatingHoursMap {
+    key: DayType
+    value: TimeRange
+}
+
+structure LocationMapping {
+    floorList: FloorList
+}
+
+list FloorList {
+    member: Floor
+}
+
+structure Floor {
+    @required
+    floorId: UUID
+
+    @required
+    level: Byte
+
+    edgeList: EdgeList
+}
+
+list EdgeList {
+    member: Edge
+}
+
+structure Edge {
+    @required
+    sourceNode: Node
+
+    @required
+    targetNode: Node
+
+    name: ResourceName
+
+    weight: Double
+}
+
+structure Node {
+    @required
+    name: ResourceName
+
+    type: NodeType
+}
+
+enum NodeType {
+    NAVIGATION = "NAVIGATION"
+    ELEVATION = "ELEVATION"
+    DESCENT = "DESCENT"
+}
+
+@mixin
+structure StoreMixin {
+    description: Description
+    imageUrl: ImageUrl
+    timezone: UTCTimezone
+    operatingHoursMap: OperatingHoursMap
+    longitude: Longitude
+    latitude: Latitude
+}
+
+@mixin
+structure StoreInputMixin with [StoreMixin] {
+    name: ResourceName
+    locationMapping: LocationMapping
+}
+
+@mixin
+@documentation("Retrieves store and its associated brand details")
+structure StoreOutputMixin with [AuditMetadata, StoreMixin] {
+    @required
+    storeId: UUID
+
+    @required
+    name: ResourceName
+
+    @required
+    brandSummary: BrandSummary
+
+    @required
+    mappingVersion: NaturalNumber
+}
+
+// Needed for the list method.
+structure StoreSummary with [StoreOutputMixin] {}
+
+list StoreSummaryList {
+    member: StoreSummary
+}