Is MAC Fix+ a setting spray?

Excuse me, could you please clarify something for me? I'm a bit confused about the product called MAC Fix+. From what I've heard, it's often talked about in the context of makeup and cosmetics. So, I'm wondering, is MAC Fix+ actually a setting spray? I've seen it being used by makeup artists and in beauty tutorials, but I'm not entirely sure what its purpose is. Could you please explain if it's indeed a setting spray, and if so, how it differs from other setting sprays on the market? Thank you in advance for your help.