Definition
Microservices is a software architecture where an application is broken into small, independent services that communicate over well defined interfaces, rather than one large, tightly connected system.
Importance
A microservices architecture lets teams develop, deploy, and scale each part of an application independently, which matters increasingly not just for traditional applications but for AI agent systems too, where a single AI agent is often split into separate services for reasoning, memory, and individual tools, mirroring the same pattern that transformed conventional software architecture years earlier. That said, microservices introduce real operational complexity, so the pattern is a genuine trade off rather than an automatic best practice.
Application
We recommend microservices where an application genuinely needs independent scaling of different components, or where different teams need to own and deploy separate parts of a system without coordinating every release. This is increasingly relevant to AI agent workflows as well, where splitting reasoning, memory, and tool access into separate services makes a complex agent easier to debug and scale, though we weigh this against the added operational overhead microservices bring, since the pattern solves real problems but isn't the right default for every application.
