Faddom allows you to check the current configuration of your environment and suggest improvements. This allows you to understand where you can reduce, or in some cases increase, the resources on specific servers. This saves you time, effort, and in a cloud environment, costs.
To access this you select Optimize > Rightsizing from the sidebar.
From here select the Data Center (on prem) or Cloud tab. The servers are grouped by data source and you can select specific applications should you wish
You expand the data source and you will see the current volume type on the machine, the recommended instance type, and the associated running costs for compute, and storage to give you suggested improvements to your environment.
Note that if you are looking at migrating to the cloud from an on-prem environment, you should use the Migrate feature.