UUID stands for Universally Unique Identifier, which is a software construction standard and also part of the Open Software Foundation's work in the field of distributed computing environments. UUID is a 128-bit number that can be computed using specific algorithms. For efficiency, UUIDs are often truncated to 16 characters in practical applications. UUIDs are used to identify attribute types and are considered unique identifiers across all spaces and times. Generally, it is guaranteed that any UUID generated anywhere will not have the same value as any other. One advantage of using UUIDs is the ability to create new identifiers for new services. The standard UUID format is: xxxxxxxx-xxxx-xxxx-xxxxxx-xxxxxxxxxx (8-4-4-4-12).