The job interview process is a meeting between a job candidate and an interviewer, typically an employer, manager, human resources personnel or another business leader. Employers usually host these meetings after they've advertised a job opening and reviewed initial application packages, including CVs and cover letters. They use interviews to talk to candidates in real-time, get to know their personalities, investigate their professional backgrounds in-depth and assess their communication skills. This way, they can narrow the candidate pool and choose the most fitting person or people for the role. Candidates themselves can use interviews as an opportunity to explain and prove their qualifications for a job. It's a great time to mention the contributions they could provide to the hiring organisation. Interviews are also ways for candidates to assess employers and determine whether the company is one they want to join. Interviews may occur in person, over the phone, through a videoconferencing application or through email messages. Depending on the company and its size, some employers only have one round of interviews before making their final hiring decisions, while others have two or three.