It’s an identification number that will uniquely identify something. The idea being that id number will be universally unique. Thus, no two things should have the same uuid. In fact, if you were to generate 10 trillion uuids, there would be something along the lines of a .00000006 chance of two uuids being the same.
There are legitimate criticisms of the Microsoft advice from the accepted answer. Inconsistent treatment of acronyms/initialisms depending on number of characters: playerID vs playerId vs playerIdentifier. The question of whether two-letter acronyms should still be capitalized if they appear at the start of the identifier: USTaxes vs usTaxes Difficulty in distinguishing multiple acronyms: i.e. USID … Read more