AWS CodeCommit Adds Difference Viewing for a Commit

You can now view code changes made between a commit and a parent commit from the AWS CodeCommit console. The change includes a list of files modified between commits, and a color-coded rendering of the specific code changes made to each file. You can view your code changes side by side (Split view) or inline (Unified view). CodeCommit also lets you hide or show whitespace changes.
Quelle: aws.amazon.com