GarageBand is great for demo tracking for songwriting and and simple audio editing of spoken word or podcast applications. It is also great for making EQ adjustments on audio from other macOS or iOS programs for easy export back into those programs. GarageBand isn't well-suited for mastering, however, and it's a little difficult to get volume levels up in post-production if capture wasn't just right
It's dang simple for anybody who knows even a little about recording software. It's not something just anyone can open and immediately be a professional at, but things are clearly marked, the help documentation is great, and it's easy to explore and discover functionality that can aid in your production workflow.
Adobe Audition is another great audio editing/recording software, in fact it is much better compared to GarageBand and has much more effects. However, it has a pretty large price tag while GarageBand is completely free. Also, Adobe Audition has a very steep learning curve which makes it hard for our staff to get used to the software. Considering all this and after deep analysis we decided to opt for GarageBand, well at least for now. We may change in the future depending on our needs.