Something which is a breeze is very easy or simple to do. Thiss expression is often used to talk about tests or exams that are easily passed with a little effort. This is an idiomatic phrase which is used in both social and professional contexts.

1. After all the hard work he had put in, he figured the exam would be a breeze.
2. I had my interview this morning. The guy was really nice, so it was a breeze.

1. We all have to complete the new training course before going back to work but I've been told it's a breeze and doesn't take very long.
2. I thought this project would be a breeze but there is a lot more to it than I originally thought.