UUID is an acronym for Universally Unique Identifier, a standard for software construction and part of the Open Software Foundation's organisation in the field of distributed computing environments.A UUID is a 128-bit numeric value, which can be computed using certain algorithms. For efficiency, commonly used UUIDs can be shortened to 16 bits.The UUID is used to identify the type of attribute and is considered a unique identifier in all space and time. In general, it can be guaranteed that the value is truly unique Any UUID generated anywhere will not have the same value. One advantage of using UUIDs is that new identifiers can be created for new services. The standard UUID format is: xxxxxxxxxx-xxxxx-xxxxx-xxxxxxx-xxxxxxxxx (8-4-4-4-12).