Spring Boot Ecosystem — Layer Map

How a request moves from the client down through Spring's modules to the database, and which modules sit on top of Spring Core.

Mermaid version

flowchart TD
    Client([Client]) --> SBA[SpringBoot Application]
    SBA --> SDJPA((Spring Data JPA))
    SDJPA --> Hibernate((Hibernate))
    Hibernate --> JDBC((JDBC))
    JDBC --> DB[(DB)]

    SBA --> MVC[Spring MVC]
    SBA --> Sec[Spring Security]
    SBA --> AOP[Spring AOP]
    SBA --> Data[Spring Data]

    MVC --> Core[Spring Core]
    Sec --> Core
    AOP --> Core
    Data --> Core

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What it means

Path	Purpose
Client → SpringBoot Application	Entry point for every incoming request
→ Spring Data JPA → Hibernate → JDBC → DB	The persistence chain — JPA is the abstraction, Hibernate is the ORM implementing it, JDBC is the low-level DB driver layer
Spring MVC / Security / AOP / Data	Pluggable modules a SpringBoot Application can use, each built on top of...
Spring Core	...the IoC/DI container every other module depends on