The AWS Developers Podcast The Evolution of Microservices: Agents, Monoliths, and the Patterns That Never Die
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Apr 29, 2026 Matheus Guimaraes, Senior Developer Advocate at AWS with 25+ years in distributed systems, explores agentic AI reshaping architectures. He contrasts deliberate monoliths and modular designs. He explains agentic microservices, context dilution, serverless runtimes for agents, and how AI coding assistants shift architects toward higher-order decisions.
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From Game Boy Assembly To AWS Developer Advocate
- Matheus recounts his 25-year career from Game Boy assembly to CTO and digital transformations.
- He used early Blazor in production (2019 startup) and moved to AWS as a solutions architect before becoming a developer advocate.
Agentic Architecture Is Microservices Evolved
- Agentic architecture is an evolution of microservices where adding a “brain” creates new integration layers like MCP and A2A.
- Matheus explains smart APIs, agentic microservices, and multi-layer coupling/availability concerns driven by agents connecting to many tools.
Choose A Modular Monolith Deliberately
- Start with a deliberate modular monolith when appropriate and enforce boundaries with architecture and tooling.
- Use prescriptive frameworks like Spring Modulith (or equivalents) to make modular boundaries enforceable, not just goodwill.
