Difference between Asynchronous and Synchronous Postback

Difference between Asynchronous and Synchronous Postback

S.No	Asynchronous Postback	Synchronous Postback
1	Asynchronous postback renders only the required part of the page	Synchronous postback renders the entire page for any postback.
2	Asynchronous postback executes only one postback at a time, that is, if we have two buttons doing asynchronous postback, the actions will be performed one by one.	Synchronous postback executes all the actions at once.
3	Asynchronous postback only modifies the update panel that raises the postback.	Synchronous postback modifies the entire page.