Please guide what is meaning by Web is stateless in simple words ?
Kindly also explain what is meaning by HTTP is stateless protocol ?
It does not keep track of configuration settings, transaction information or any other data for the next session. When a program "does not maintain state" (is stateless) or when the infrastructure of a system prevents a program from maintaining state, it cannot take information about the last session into the next, such as settings the user chose or conditions that arose during processing.
OR it can be simple web definition:
A protocol is stateless if there is no relation between subsequent request-response pairs. The server can handle each request uniquely and does not have to keep a session state for the client.