Architecural Differences Between Selenium RC and Selenium Web-Driver.

Selenium RC Architecture

1. No Direct communication between selenium Code and AUT.
2. Their is a RC server which we have to Start/Stop before/After every execution.
3. No Support for Android and i-phone.
4. Cannot handle Rich API.
5. Cannot handle mouse movements.
6. When we start the selenium RC server it injects Java-script program called 'Selenium Core' into the browser.

Selenium RC Architecture 

1. Their is no RC Server so we do not have Start/Stop it before/after every execution.
2. Support for Android and i-phone.
3. Can handle Rich API.
4. Can handle Mouse Movements.
5. Future enhancements are supported.