We have multiple frameworks in Java. Spring framework is most popular out of them. Some other widely used frameworks are Struts, JSF but Spring has already dominated all of them. Let's understand why is Spring framework so popular in this blog. Before that I would like you to focus on some basic terminologies used in the process of evolution of a Framework. What is a Framework ? Framework is a special type of software that is built on top of other technologies. It has ability to generate commonly used logics dynamically. It also provides abstraction on other technologies to simplify application/software development. eg. Spring on top of Servlet & JSP technologies, Struts on top of Servlet & JSP technologies, JSF top of