spring.io
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What is spring.io
Spring.io is the home for the Spring ecosystem, including the Spring Framework and related projects used to build Java-based web applications and microservices. It targets software teams building backend services, APIs, and enterprise applications on the JVM. The ecosystem provides a modular programming model (core framework, web MVC/reactive stacks, data access, security, and integration) and commonly pairs with Spring Boot for application configuration and packaging.
Mature Java ecosystem
Spring is widely used for building JVM-based web applications and services, with long-standing community and enterprise adoption. It provides a broad set of modules that cover common backend needs such as dependency injection, web frameworks, data access, and security. This breadth reduces the need to assemble many unrelated libraries for typical Java service architectures.
Multiple web programming models
Spring supports both traditional servlet-based development (Spring MVC) and reactive development (Spring WebFlux). This allows teams to choose a model aligned with their runtime and scalability requirements without switching ecosystems. It also supports REST APIs and integration patterns commonly used in service-oriented and microservice designs.
Strong integration surface area
Spring integrates with common infrastructure components such as relational databases, messaging systems, and security providers through standardized abstractions and adapters. It commonly fits into containerized and cloud deployments by pairing with Spring Boot and related projects. This makes it practical for teams operating across different environments rather than being tied to a single cloud platform.
Not a full PaaS
Spring.io itself is not a cloud platform that provides hosting, scaling, and managed runtime in the way PaaS offerings do. Teams typically deploy Spring applications to their own infrastructure, containers, or a separate cloud service. As a result, operational capabilities like autoscaling, routing, and managed build/deploy pipelines depend on external tooling.
Complexity and learning curve
The ecosystem includes many projects and configuration concepts, which can be difficult for new teams to navigate. Architectural choices (MVC vs reactive, security approach, data access patterns) can introduce upfront design work. Large applications can accumulate framework-specific patterns that require experienced maintainers.
Performance tuning requires expertise
Spring applications run on the JVM and often rely on reflection, proxies, and layered abstractions, which can complicate troubleshooting and tuning. Startup time and memory footprint can be a concern for certain deployment styles (for example, short-lived or highly elastic workloads) without additional optimization work. Achieving consistent performance typically requires profiling, dependency management, and runtime tuning.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Open Source (Community) | $0 — free | Spring Framework, Spring Boot, Spring Cloud and other Spring OSS projects are freely available from spring.io; community releases, docs, guides and tools are provided by the project. |
| Tanzu Spring (Enterprise) | Custom pricing — contact sales | Enterprise offering (Tanzu Spring / Spring Enterprise) provides Long-Term Support (LTS) releases, Spring Application Advisor, enterprise-grade Spring Boot extensions, OpenJDK and Tomcat support, and 24x7 commercial support. Pricing is not published on spring.io; customers are directed to contact sales. |
Seller details
VMware, Inc. (Spring projects; now part of Broadcom Inc.)
Palo Alto, California, USA
2004
Subsidiary
https://spring.io/
https://x.com/springcentral
https://www.linkedin.com/company/spring-framework/
