Spring replaced heavy application-server requirements with plain JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. classes, automatic wiring of components, and modular configuration. It powers RESTRepresentational State Transfer — a style for web APIs using HTTP methods and resource URLs. APIs, microservicesAn architecture splitting applications into small independent services — each deployed and scaled separately. (via Spring BootA Java framework for production-ready apps — auto-configuration and embedded servers for microservices.), batch jobs, and banking backends. Spring BootA Java framework for production-ready apps — auto-configuration and embedded servers for microservices. later made running a JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. web service as simple as launching a single file.

Spring became the default JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. enterprise stack and influenced how apps are structured across the industry.

It proved JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. apps could be modular and testable without bulky enterprise server containers.