JMS stands for Java Message Service. JMS API is a Java API which contains a common set of interfaces to implement enterprise based messaging systems. JMS API is used to implement Messaging systems in Java-based applications only, it does not support other languages.
JMS API is used to create, send, receive and read messages or exchange messages between different systems. Once we develop a Java Messaging System with JMS API, then we can deploy the same application in any JMS Provider software.
