Best to give more information in your questions so there's no need to have multiple replies.
if tags is the only thing missing, there's views shipped with the same app that link tags to the VM (and other resource types).
below i filtered only for VMs in the database views table listing, but you get the general idea.
Yes you can surely build and share your custom reports using PA reports.
with the sn_disco_cd.user role the user can view the data too.
if you wish to build custom pages in cloud operations workspace you have to use ui builder - that would take some understanding of the page layout. this is not supported or documented.
there's a much simpler approach than what's suggested here.
install the cloud operations workspace store app or Performance Analytics content pack for Cloud Resources. these are free apps if you are a discovery/cpg customer. with this, you will get new tables with references to the same CIs, that link the fields. see screenshot below.
Ram
