In today's world of distributed systems and databases, ensuring the uniqueness of identifiers is crucial. Universally Unique Identifiers (UUIDs) serve this purpose by providing a way to generate unique identifiers without relying on centralized authorities. But with different versions of UUIDs—ranging from Version 1 to Version 8—how do you choose the right one for your needs? Each version has its specific use cases, strengths, and weaknesses. This article will dive deep into the facts about each UUID version, breaking down their differences and helping you decide which one best suits your requirements.