For ATS, it is an online form, telephone interview, and then a 2-part interview at the office. The online form is pretty standard, with just a few additional competency questions which ask you about your interest and understanding of Accenture, ATS, and technology. The telephone interview is again very much competency-based, with a few technical questions such as the SDLC and Waterfall VS. Agile approach. Nothing too complicated if you have a basic software project management background. The office interview is split into technical (skills) and HR. The HR is quite forward, basically a repeat of the telephone interview, but slightly longer and rigorous. The technical interview is actually dependent on you. If you mention certain technologies, qualifications, or programming languages, then prepared to be grilled on these in detail. It would be a good idea to review the basic processes and functions of the programming languages especially. Knowledge about concepts like OOP and software project management will also come in handy.
I applied through a recruiter. The process took 1 day. I interviewed at Accenture (Madras) in Jan 2013
Interview
it's having three rounds
1.Technical Round---More over questions on project specific which you have being working or worked.
2.Manager Round---Very generic questions about the way you came across to the current position
3.Hr Round--- Simple Question on Qualification details and salary negotiation.