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icarthick merged 4 commits into from
Jul 22, 2026
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fix(gcp-to-aws): stop recommending classic Bedrock Agents (closed to new customers 2026-07-30) #161

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e05127b
fix(gcp-to-aws): stop recommending classic Bedrock Agents (maintenanc…
Jul 20, 2026
4152944
Merge branch 'main' into feat/bedrock-agents-classic-eol
herosjourney Jul 21, 2026
8a218b4
Merge upstream/main into feat/bedrock-agents-classic-eol
icarthick Jul 22, 2026
896401e
Merge branch 'main' into feat/bedrock-agents-classic-eol
icarthick Jul 22, 2026
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2 changes: 1 addition & 1 deletion ...gration-to-aws/skills/gcp-to-aws/references/design-refs/ai-gemini-to-bedrock.md
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Expand Up @@ -24,7 +24,7 @@ Gemini 3.5 Flash is now GA (May 2026) — the current flagship Flash model. Gemi
- Claude Sonnet 4.6 / Opus 4.x lead on real-world agentic tasks (GDPval evaluation) — the gap between benchmarks and production agent reliability is real
- Claude prompt caching (90% savings on repeated content) has no Gemini equivalent
- Claude function calling remains best-in-class for complex multi-turn tool use
- AWS ecosystem integration (Bedrock Agents, Knowledge Bases, Guardrails) has no Gemini equivalent
- AWS ecosystem integration (AgentCore, Knowledge Bases, Guardrails) has no Gemini equivalent

**Migration case by tier:**

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4 changes: 2 additions & 2 deletions ...gration-to-aws/skills/gcp-to-aws/references/design-refs/ai-openai-to-bedrock.md
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Expand Up @@ -201,9 +201,9 @@ Assistants API and Responses API are different surfaces. Do not treat all Assist
→ Mantle Responses API with tool use is viable. Moderate code migration (1-2 weeks) to adapt tool definitions and run lifecycle.

**4. App uses Assistants API with file search, vector stores, code interpreter, persistent Assistant objects, or complex run lifecycle management**
→ Do not recommend Mantle. Evaluate: Bedrock Agents (sessions, action groups, knowledge bases) for full agentic replacement (2-4 week migration), or app-managed orchestration if the team prefers to own state.
→ Do not recommend Mantle. Evaluate: Bedrock AgentCore (Harness sessions/memory, action groups as MCP tools via Gateway, gateway-fronted knowledge bases) for full agentic replacement (2-4 week migration), or app-managed orchestration if the team prefers to own state. Never target classic Bedrock Agents (`bedrock-agent`): it is in maintenance mode and closed to new customers as of July 30, 2026.

**When to prefer Converse API over Mantle:** If you need Bedrock-specific features (Guardrails, Knowledge Bases, prompt caching, Bedrock Agents integration) or your target region doesn't have Mantle. Mantle is the fastest path; Converse API is the most feature-complete path.
**When to prefer Converse API over Mantle:** If you need Bedrock-specific features (Guardrails, Knowledge Bases, prompt caching, AgentCore integration) or your target region doesn't have Mantle. Mantle is the fastest path; Converse API is the most feature-complete path.

### GPT-5.4 → Claude Sonnet 4.6

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12 changes: 7 additions & 5 deletions ...gins/migration-to-aws/skills/gcp-to-aws/references/phases/clarify/clarify-ai.md
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Expand Up @@ -136,14 +136,16 @@ _Skip when:_ Auto-detection fully resolves the framework(s). Use detected value(

| Answer | Recommendation Impact | Migration Effort | Timeline |
| ---------------------------------- | --------------------------------------------------------------------------------------------------------- | ----------------- | ---------------------------------------------------- |
| A) No framework — direct API calls | Swap SDK calls to Bedrock SDK; evaluate Bedrock Agents if planning agentic | Low | 1–3 weeks depending on call sites |
| A) No framework — direct API calls | Swap SDK calls to Bedrock SDK; evaluate AgentCore (Harness) if planning agentic | Low | 1–3 weeks depending on call sites |
| B) LLM router/gateway | Add Bedrock as provider in gateway config; no app code changes; verify SigV4 auth | Minimal | Hours to 1–3 days |
| C) LangChain / LangGraph | Provider swap via `ChatBedrock`; chains/graphs/tools preserved; validate tool schemas | Low | 1–3 days; 1 week if complex graphs |
| D) Multi-agent framework | Path 1: Keep framework, swap LLM provider (lower effort). Path 2: Migrate to Bedrock multi-agent (deeper) | Medium | Path 1: 3–5 days; Path 2: 2–4 weeks |
| E) OpenAI Agents SDK | Highest effort; tightly coupled to OpenAI API; recommend Bedrock Agents or LangGraph as portable step | High | 2–4 weeks |
| F) MCP / A2A | Bedrock Agents supports MCP natively; A2A interop available; recommend Bedrock Agents as orchestration | Low–Medium | 3–5 days MCP; 1–2 weeks A2A |
| E) OpenAI Agents SDK | Highest effort; tightly coupled to OpenAI API; recommend AgentCore (Harness, or Runtime for code loops) | High | 2–4 weeks |
| F) MCP / A2A | AgentCore supports MCP natively (Gateway exposes tools as MCP); A2A interop; recommend AgentCore | Low–Medium | 3–5 days MCP; 1–2 weeks A2A |
| G) Voice platform | If platform supports Bedrock natively → config change; otherwise evaluate Nova 2 Sonic | Minimal to Medium | Hours if native; 2–3 weeks if Nova 2 Sonic migration |

> **Never recommend classic Bedrock Agents (`bedrock-agent`) as a migration target.** It is in maintenance mode and closed to new customers as of July 30, 2026 ([AWS announcement](https://aws.amazon.com/about-aws/whats-new/2026/06/aws-service-availability/)). Agentic targets are AgentCore Harness (config-based, default) or AgentCore Runtime (code-defined loops) — consistent with Q23–Q26.

### Combination Logic

| Combination | Approach |
Expand All @@ -152,7 +154,7 @@ _Skip when:_ Auto-detection fully resolves the framework(s). Use detected value(
| B only | Quick win — gateway config change, skip SDK migration steps |
| B + any other | Gateway swap is the quick win; assess framework migration as separate workstream |
| C + A | Two workstreams: LangChain provider swap (fast) + direct call migration (slower) |
| D + F | Complex — multi-agent with MCP tooling; recommend Bedrock Agents to unify orchestration and tools |
| D + F | Complex — multi-agent with MCP tooling; recommend AgentCore to unify orchestration and tools |
| E + anything | E is the long pole; plan timeline around Agents SDK migration; other layers may be quick wins |
| Multiple frameworks (C+D, C+E, etc.) | Assess independently; prioritize by traffic volume or business criticality; consolidate post-migration |

Expand Down Expand Up @@ -227,7 +229,7 @@ Interpret → `ai_priority`. Default: E → `"balanced"`.
| Extended thinking / Chain-of-thought | Claude Sonnet 4.6 with extended thinking mode; Claude Opus 4.6 for most complex reasoning |
| Prompt caching | Claude Sonnet 4.6 with prompt caching enabled; cost savings analysis included. **Caveat:** caching only helps for long, repeated context (system prompts, documents). Per-model minimum token thresholds (~1K–4K tokens) and TTL apply — short prompts won't cache. Verify current minimums at docs.aws.amazon.com/bedrock/latest/userguide/prompt-caching.html before recommending. |
| RAG optimization | Amazon Bedrock Knowledge Bases recommended alongside model; Titan Embeddings for vector store |
| Agentic workflows | Claude Sonnet 4.6 with Bedrock Agents; multi-agent orchestration guidance included |
| Agentic workflows | Claude Sonnet 4.6 with AgentCore (Harness); multi-agent orchestration guidance included |
| Real-time speed (< 500ms) | Claude Haiku 4.5 or Nova Micro; streaming response guidance included |
| Multimodal with image generation | Claude Sonnet 4.6 (vision) + Amazon Nova Canvas for generation |
| Real-time conversational speech | Amazon Nova 2 Sonic recommended for speech-to-speech; latency guidance included |
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4 changes: 2 additions & 2 deletions ...plugins/migration-to-aws/skills/gcp-to-aws/references/phases/clarify/clarify.md
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Expand Up @@ -507,8 +507,8 @@ If user opts in, present Q-E1–Q-E2 (defined in **Category E — Migration Post
| CCPA / CPRA | Q2 = G (CCPA / CPRA) | Consumer privacy, logging/retention, data-inventory posture; confirm regions with legal review |
| Gateway-only AI | Q14 = B only (LLM router/gateway) | Config change only; skip SDK migration |
| LangChain/LangGraph AI | Q14 includes C | Provider swap via ChatBedrock; 1–3 days |
| OpenAI Agents SDK | Q14 includes E | Highest AI effort; Bedrock Agents; 2–4 weeks |
| Multi-agent + MCP | Q14 = D + F | Bedrock Agents to unify orchestration + MCP |
| OpenAI Agents SDK | Q14 includes E | Highest AI effort; AgentCore (Harness/Runtime); 2–4 weeks |
| Multi-agent + MCP | Q14 = D + F | AgentCore to unify orchestration + MCP (Gateway) |
| Voice platform AI | Q14 includes G | Check native Bedrock support; Nova 2 Sonic if needed |
| GPT-5.5 migration | Q19 = GPT-5.5 | Claude Opus 4.6 — Bedrock 17% cheaper on output; or Sonnet 4.6 for 53% savings |
| GPT-5.5 Pro migration | Q19 = GPT-5.5 Pro | Nova 2 Pro — 95% cheaper on Bedrock |
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2 changes: 1 addition & 1 deletion ...lugins/migration-to-aws/skills/gcp-to-aws/references/phases/design/design-ai.md
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Expand Up @@ -230,7 +230,7 @@ For each capability in `integration.capabilities_summary` that is `true`, check
| Batch Processing | BatchPredictionJob | Batch Inference (async) | Partial |
| Fine-tuning | Vertex AI tuning | Bedrock Custom Model | Partial |
| Grounding / RAG | Vertex AI Search & RAG | Bedrock Knowledge Bases | Full |
| Agents | Vertex AI Agent Builder | Bedrock Agents | Full |
| Agents | Vertex AI Agent Builder | Bedrock AgentCore (Harness) | Full |

Record `capability_gaps[]` for any Partial or None parity.

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