Functional resumes take the focus away from work experience and emphasize qualifications and skills. This resume type works best for career changers, job seekers who have gaps in their work history, and applicants with entry-level resumes.
There is not one resume format that works for everyone. There might not even be only one resume format for you and it could benefit you to have multiple formats of your resume available. For example, if you’re applying for a job and you don’t know whether your resume will be submitted through ATS, submit both a chronological resume and use a functional resume for your in person interview.