Generally speaking, the match is a process designed to help applicants secure their preferred residency position(s) and help programs secure their preferred candidates. It's based on a computer algorithm that compares the rank order list of applicants with those of residency programs. This basic premise is simple, but the circumstances surrounding the match are complicated.
There are increasingly more applicants than residency positions, and certain specialties experience an even more disproportionate amount of applicants. This means residency applicants must act strategically to ensure they match to a residency program. And without residency training, the career options and income available to medical school graduates are severely limited.