A hosting vendor would like to deploy SCOM on its site. Does MS have any solution for this? Remote Operation Manager is still valid?

ROM is retired two years ago. You can use a gateway servers to do this. Check this: http://social.technet.microsoft.com/Forums/en-US/operationsmanagergeneral/thread/2d36f45d-c925-4093-91c1-e91e4d592f5chttp://OpsMgr.ru/

Would also go for gateways here. And you can specify the site as well for anything passing through the gateway (like a customer name code).Bob Cornelissen - BICTT (My BICTT Blog)