A cover letter is important because it:
- is required along with a well-written CV as part of a complete job application (and even companies that make cover letters optional prefer applicants to go the extra mile and write one)
- formally introduces you to the employer
- explains why you’re a good fit for the role
- expands on the experience and skills summarised in your CV
- highlights your personality
- gives you space to show that you’ve researched the company
- politely requests a job interview