The Upgrade Compatibility Tool (UCT) is a free tool that analyzes the incompatibilities between your current version and the target upgrade version in just minutes. Using this tool makes the upgrade process faster and easier to execute.
In this video:
What the Upgrade Compatibility Tool is
How it can help you quickly identify the errors and fixes required to upgrade to a newer Adobe Commerce version
How to access the HTML results to help visualize modules by severity and number of incompatibilities