Snapshot Differences Overview
The snapshot differences feature performs a comparison between two Salesforce orgs, two Git commits or a Salesforce org and a Git commit. Differences can be filtered by type of difference (create, update and delete) and file name. When the difference is a type update, a Show Diff link is displayed next to the file name. By clicking on this link, a side by side comparison will be displayed.
These snapshot differences can then be deployed to help maintain the consistency between various sandboxes and/or the production environment. The selection of source and destination orgs is not limited to connected Salesforce instances (production-sandbox or sandboxes for the same organization).
For additional information about snapshot differences, visit the article How to Create a Snapshot Difference.