Config as a Service: Simplifying Application Setup with Spring Cloud Config

Spring Cloud Config provides server-side and client-side support for externalized configuration in a distributed system. With the Config Server, you have a central place to manage external properties for applications across all environments. The concepts on both client and server map identically to the Spring Environment and PropertySource abstractions, so they fit very well with Spring applications but can be used with any application running in any language. 

As an application moves through the deployment pipeline from dev to test and into production, you can manage the configuration between those environments and be confident that applications have everything they need to run when they migrate. The default implementation of the server storage backend uses git, so it easily supports labeled versions of configuration environments and is accessible to a wide range of tooling for managing the content. Adding alternative implementations and plugging them in with Spring configuration is easy.

For a quick start, please refer to this url  https://cloud.spring.io/spring-cloud-config/reference/html/