Migrating the Sakila database from MongoDB to YugabyteDB using Studio 3T involves several steps, including creating the necessary collections in MongoDB, unpacking and importing the Sakila sample database into MongoDB, setting up a local 3-node YugabyteDB cluster, exporting the data from MongoDB using Studio 3T, and executing the SQL files against YugabyteDB to rebuild the collections. The process leverages the capabilities of Studio 3T as an ETL tool, allowing for efficient migration of data between MongoDB and YugabyteDB. This approach enables developers to take advantage of the features and benefits offered by distributed SQL databases like YugabyteDB, such as auto-sharding, synchronous data replication, durable and fast writes, linearizable reads, and strongly consistent global secondary indexes.