Every job posting gets volumes of applications. More than 70% of these applications are not even seen by the recruiter. This is because the applicant tracking system (ATS) software used by companies rejects resumes for not matching the job description.
Paying careful attention to keywords mentioned in the Job Description and including them as resume keywords can get you more interview calls. You need to do this for each job you apply for. Here's how RezRunner can help you beat the Applicant Tracking Systems: