I see a lot of confusion on how classifications and sensitivity labels work in Microsoft Purview. This blog will help to clear that up, but I first must address the confusion with Purview now that multiple products have been renamed to Microsoft Purview. I decided to use a question-and-answer format that will hopefully clear up the confusion (I was very confused too!):
Purview is a fantastic product. I just wish it cost about 10% as much as it does; then I could heartily recommend it to people.