Spring Framework Overview :: Spring Framework
The Spring Framework is divided into modules. Applications can choose which modules they need. At the heart are the modules of the core container, including a configuration model and a dependency injection mechanism.
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messaging, transactional data and persistence, and web.
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It also includes the Servlet-based Spring MVC web framework and, in parallel, the Spring WebFlux reactive web framework.
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it integrates with carefully selected individual specifications from the traditional EE umbrella:
The Spring Framework also supports the Dependency Injection (JSR 330) and Common Annotations (JSR 250) specifications …
Today, with the help of Spring Boot, applications are created in a devops- and cloud-friendly way, with the Servlet container embedded and trivial to change.