Packaged Install Builds with DDC and Cloud DDC

Does anyone have any clarity re: the different types of DDC’s when working with an installed custom package build of UE5?

For example if you make an Installed build for a given platform (-set:WithDDC=false) it will create a paked DDC for the engine. When you use -set:WithDDC=true it will create a new engine folder with an uncompressed DDC. Is there a benefit to one over the other?

Also, how does the Cloud DDC work with a custom install build of the engine? Does “UploadDDCToAWS” send up both the local game’s DDC as well as the engine or is there a special process?

Thanks