Spring Boot has Java development with its embedded servers, auto-configuration, and convention-over-configuration philosophy. Among its many features, one of the most powerful — but often underused — is the ability to create custom Spring Boot starters. These components enable development teams to package and reuse common configuration and boilerplate logic, making microservices more modular, maintainable, and consistent across a large-scale enterprise platform.
This article explores how to build and use custom Spring Boot starters with auto-configuration to centralize concerns such as database access, authentication, and WebSocket communication, especially valuable in environments like loan servicing and trading platforms that operate with numerous microservices.
