title: Share Data Management Gateway across Azure Data Factory Instances
body: <p>I have a 3-TIER setup with DEV/TEST/PROD (but lets ignore TEST for this post). For each TIER I have an ADF instance running in a separate resource group within the same subscription. My DEV-ADF instance contains a Gateway to load local data into an Azure SQL DW - lets call the gateway "MyGateway". 
  I deployed the same ADF project also to my PROD-ADF instance but I cannot create a new Gateway with the same name. Also, I do not want to spin up a second VM to run another DMG there. So right now, my PROD-ADF instance does not have a Gateway and the LinkedServices that reference the Gateway return status "Offline"</p>
  
  <p>HOWEVER, data is loaded correctly on both systems (DEV and PROD)! Both seem to use the same Gateway which only exists in the DEV-ADF instance. I do not have any other explanation why the PROD load would work otherwise. So the question is, whether the Gateways are shared explicitly between ADF instances.
  Can someone confirm this?
  if Yes, at which scope are they shared? Subscription? Tenant? all Tenants I have access to?!?</p>
  
  <p>thanks in advance,
  -gerhard </p>