What I understand and I also asked from one of consultant. Now the process is changed. For 80% to 90% cases are called for interview. The Harper govt. (Current Canadian ruling party) eliminate the interview process to make the process quicker. But there were so many fake cases which cause the problems in the immigration process. So the govt. decided to follow the same old process to make sure only genuine applicants enter the country. The interview make the process faster and a double check on case positive and negative aspects.
The purpose of the interview could be:
1). To make the process fast.
2). To make sure the case is genuine.
3). JD, work experience and NOC matched.
4). Subject is able to adjust the Canadian life.
@ Aisha19:
No need to worry about interview. Just make sure you know every thing about your file. This will be a normal conversation b/w you & VO. Prepare your self and the criteria is your own case file.
Thanks, Iqbal