A Universally Unique Identifier (UUID), also known as a Globally Unique Identifier (GUID), is a 128-bit number used to uniquely identify information in computer systems.
It is designed to be unique across space and time, meaning it is extremely unlikely that two different systems will generate the same UUID.
UUIDs are typically represented as 36-character strings, formatted as 8-4-4-4-12 hyphen-separated hexadecimal values.