Recruitment is always done based on keywords in the Job Description and keywords in the resume of the candidate. This process holds good for most of the top placement services company. Generally, recruiters talk to the potential candidates for 2-3 minutes over a phone call and submit the resume based on short conversation and keywords in the resume. What this results in is that hiring managers get 100s of resumes based on keywords and unqualified conversations that recruiters have had with the candidates. This does not qualify for the right approach to recruitment.