Spring
✅ API is like a method or interface that defines what can be done (like login(), searchProduct()), but not how it’s done. ✅ Web Service is the actual implementation of that API which runs over the internet or network using HTTP, providing real data/responses. ✅ Microservices is an architectural style where these services (API + implementation) are split into small, independent parts, each doing one specific task and running independently, often communicating via APIs. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Spring It helps Java developers build large applications easily by using features like: Dependency Injection (DI) – to reduce tight coupling between classes Aspect-Oriented Programming (AOP) – to separate common tasks (like logging, security) from business logic Spring Core provides the foundation that other Spring modules (like Spring MVC, Spr...