I applied through college or university. The process took 1 day. I interviewed at EY (Coimbatore) in Mar 2016
Interview
General aptitude questions to check how career oriented you are. Simple and crisp. All they want to know is you are sure of working and making a career here and you deserve to contribute to their goal.
I applied online. The process took 3 weeks. I interviewed at EY (Lagos) in Jan 2013
Interview
Panel interview on questions on your discipline, how you would handle working in different teams, how you feel about relocation. how you feel about working late hours and getting along with teams from different countries.
This is the first year of them doing the digital interview, it is a recording interview that participant can finish it online. They've prerecord each questions and you only need to record your answers.