A cover letter can explain why you’re the best candidate for the job in your own words. A resume cannot show your personality because it’s designed to give a clear, objective overview of your professional background.
The best cover letters give insight into a candidate’s work experience, express their enthusiasm for the job, and showcase why they’re a great fit for the position and company.
Cover letters can also explain gaps in work history or career changes, providing hiring managers with a clearer picture of who you are as a professional.