What is the purpose of using the Saga pattern in distributed system architecture?

The Saga pattern is used for managing distributed transactions in microservice architecture, where traditional atomicity cannot be guaranteed due to data and service distribution. The goal of the pattern is to ensure data consistency through a sequence of local transactions, each with a compensating operation to rollback in case of errors.

Thus, Saga breaks a large transaction into a series of steps with the ability to compensate for already completed actions, avoiding locks and increasing system fault tolerance.