diff --git a/api/v1/store.go b/api/v1/store.go
index 6caa89d..520ed0a 100644
--- a/api/v1/store.go
+++ b/api/v1/store.go
@@ -341,7 +341,7 @@ type RedisSpec struct {
 }
 
 type FPMSpec struct {
-	// +kubebuilder:validation:Enum=static;dynamic;ondemand
+	// +kubebuilder:validation:Enum=static;dynamic;ondemand;operator
 	// +kubebuilder:default=static
 	ProcessManagement string `json:"processManagement"`
 
diff --git a/api/v1/store_env.go b/api/v1/store_env.go
index b9a9000..ae90343 100644
--- a/api/v1/store_env.go
+++ b/api/v1/store_env.go
@@ -144,7 +144,7 @@ func (s *Store) getSessionCache() []corev1.EnvVar {
 }
 
 func (f *FPMSpec) getFPMConfiguration() []corev1.EnvVar {
-	if f.ProcessManagement != "dynamic" {
+	if f.ProcessManagement != "dynamic" && f.ProcessManagement != "operator" {
 		return []corev1.EnvVar{
 			{
 				Name:  "FPM_PM",
diff --git a/internal/deployment/admin.go b/internal/deployment/admin.go
index 323e840..92cbd83 100644
--- a/internal/deployment/admin.go
+++ b/internal/deployment/admin.go
@@ -75,8 +75,16 @@ func AdminDeployment(store v1.Store) *appsv1.Deployment {
 
 	annotations := util.GetDefaultContainerAnnotations(appName, store, store.Spec.AdminDeploymentContainer.Annotations)
 
-	// Merge containerSpec.ExtraEnvs to override with merged values from AdminDeploymentContainer
 	envs := util.MergeEnv(store.GetEnv(), containerSpec.ExtraEnvs)
+	if store.Spec.FPM.ProcessManagement == "operator" {
+		if containerSpec.Resources.Limits.Memory() != nil && containerSpec.Resources.Limits.Memory().Value() != 0 {
+			phpEnvs := GetCalculatedPHPFPMValues(int(containerSpec.Resources.Limits.Memory().Value() / (1024 * 1024)))
+			envs = util.MergeEnv(envs, phpEnvs)
+		} else {
+			phpEnvs := GetCalculatedPHPFPMValues(2048)
+			envs = util.MergeEnv(envs, phpEnvs)
+		}
+	}
 
 	containers := append(containerSpec.ExtraContainers, corev1.Container{
 		LivenessProbe: &corev1.Probe{
diff --git a/internal/deployment/storefront.go b/internal/deployment/storefront.go
index ba99004..a9f81af 100644
--- a/internal/deployment/storefront.go
+++ b/internal/deployment/storefront.go
@@ -79,8 +79,17 @@ func StorefrontDeployment(store v1.Store) *appsv1.Deployment {
 
 	annotations := util.GetDefaultContainerAnnotations(appName, store, store.Spec.StorefrontDeploymentContainer.Annotations)
 
-	// Merge containerSpec.ExtraEnvs to override with merged values from StorefrontDeploymentContainer
 	envs := util.MergeEnv(store.GetEnv(), containerSpec.ExtraEnvs)
+	if store.Spec.FPM.ProcessManagement == "operator" {
+		if containerSpec.Resources.Limits.Memory() != nil && containerSpec.Resources.Limits.Memory().Value() != 0 {
+			phpEnvs := GetCalculatedPHPFPMValues(int(containerSpec.Resources.Limits.Memory().Value() / (1024 * 1024)))
+			envs = util.MergeEnv(envs, phpEnvs)
+		} else {
+			phpEnvs := GetCalculatedPHPFPMValues(2048)
+			envs = util.MergeEnv(envs, phpEnvs)
+			fmt.Println("envs: ", phpEnvs)
+		}
+	}
 
 	containers := append(containerSpec.ExtraContainers, corev1.Container{
 		Name: DEPLOYMENT_STOREFRONT_CONTAINER_NAME,
diff --git a/internal/deployment/util.go b/internal/deployment/util.go
index 4f9d293..6619131 100644
--- a/internal/deployment/util.go
+++ b/internal/deployment/util.go
@@ -3,14 +3,23 @@ package deployment
 import (
 	"context"
 	"fmt"
+	"math"
 
 	v1 "github.com/shopware/shopware-operator/api/v1"
 	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
+const (
+	startServersRatio    = 0.25
+	minSpareServersRatio = 0.2
+	maxSpareServersRatio = 0.375
+	memoryPerChildMiB    = 80 //Every PHP-FPM process in an empty shop uses 70.6MiB
+)
+
 func getDeploymentCondition(
 	deployment *appsv1.Deployment,
 	storeReplicas int32,
@@ -92,3 +101,33 @@ func GetStoreDeploymentImage(
 	}
 	return "", fmt.Errorf("could not find storefront deployment container")
 }
+
+func GetCalculatedPHPFPMValues(memoryLimitMiB int) []corev1.EnvVar {
+	maxChildren := int(math.Round(float64(memoryLimitMiB / memoryPerChildMiB)))
+	startServers := int(math.Round(float64(maxChildren) * startServersRatio))
+	minSpare := int(math.Round(float64(maxChildren) * minSpareServersRatio))
+	maxSpare := int(math.Round(float64(maxChildren)*maxSpareServersRatio) + 1)
+
+	return []corev1.EnvVar{
+		{
+			Name:  "FPM_PM",
+			Value: "dynamic",
+		},
+		{
+			Name:  "FPM_PM_MAX_CHILDREN",
+			Value: fmt.Sprintf("%d", maxChildren),
+		},
+		{
+			Name:  "FPM_PM_START_SERVERS",
+			Value: fmt.Sprintf("%d", startServers),
+		},
+		{
+			Name:  "FPM_PM_MIN_SPARE_SERVERS",
+			Value: fmt.Sprintf("%d", minSpare),
+		},
+		{
+			Name:  "FPM_PM_MAX_SPARE_SERVERS",
+			Value: fmt.Sprintf("%d", maxSpare),
+		},
+	}
+}