NOTE
Spring Framework Modules
A conceptual map of Spring Core/Beans/Context, AOP, data/transactions, web MVC/reactive, testing, and integration modules.
This is a historical learning note and may contain outdated or incomplete understanding.
Spring Framework is modular. Major areas include core container/beans/context, AOP, data-access/transaction abstractions, JDBC/ORM integrations, web MVC and reactive web support, messaging/integration support, and testing utilities.
Do not memorize an old module list as permanent: artifacts and package organization evolve. Learn the responsibility boundaries, then consult the dependency documentation for the deployed Spring generation.