Fivetran Transformations allows users to create ongoing snapshots of their data, enabling trend analysis over time. With the release of this feature, users can centralize data into a relational warehouse and utilize table history functionality even when their data source doesn't offer visibility into record history. The process involves creating a new transformation in Fivetran Dashboard, naming it, and pasting an SQL script that creates and updates the table history for a specified table. This feature can be used to view how data looked at a specific point in time and analyze trends while still using the base table for daily analytics.