What is Spring ? Brief history. And Why Spring is hot in the market ?

Spring

Spring has been developed by Rod Johnson.

Earlier the oorganization name was Spring but now it has changed to Pivotal

In a very beginning, Spring/Pivotal used to call it Interface 21.

Why named as Spring ? No Reasons… ;)

EJBs are like winter season in US -20 degree temperature. After winter next season is Spring. Because in US Spring season is best around 5-10 degree temperature. NO SPECIAL REASON that’s why logo is a leaf. ;)

Why Spring is Hot in developers world ?

Below are few points to answer above query :

1. Spring is better alternative of EJB. 
   
   
2. By using EJB, applications become tightly coupled and heavy weight but using spring we can create loosely coupled and light weight application. 
   
   
3. Reduce investment cost. No need for application servers or to buy services.
   
   
4. Spring freely provide services so that we can use those service in our enterprise applications.
   
   
5. EJBs are suitable for banking applications but for  if your investment cost is 1-2 lacks EJBs are not suitable .We need some free resources that is Spring.