Microsoft has been careful when sharing information about its Windows Azure customer counts. In 2010, the Redmondians said they had 10,000 Azure customers. In 2011, it was 31,000. (Microsoft officials declined to say if any of these were Microsoft users and how many were paying customers.)
On May 8, Microsoft Corporate Vice President of Azure Marketing Bob Kelly provided Merrill Lynch Technology Conference attendees with another tally tidbit. Kelly said Microsoft now has "high tens of thousands of customers" for Windows Azure, with "hundreds" of new customers being added daily. Again, Microsoft didn't (and won't) say whether this total includes any Microsoft customers and/or whether all of these customers are paying users.
(I got these datapoints from Directions on Microsoft analyst Rob Helm, who tweeted Kelly's remarks. I was unable to listen to Kelly's talk due to technical difficulties with the webcast. Update (May 9): I finally was able to listen to the webcast, and can verify Kelly said everything in Helm's tweets.)
The latest customer count wasn't the only Azure news Kelly shared. He also said, again, according to Helm's tweet, that Microsoft's Dynamics CRM service will be hosted on Windows Azure before the end of calendar 2012. Currently, Dynamics CRM is hosted in Microsoft datacenters, and pieces of it are already on Azure, but the core service itself is not hosted on Azure. Microsoft officials have said repeatedly that the company planned to move Dynamics CRM to Azure but have consistently declined to say when. (I asked again today but so far no response from the CRM team.)
Update: So it seems like Kelly may have misspoken on the timing of CRM on Azure. I'm now thinking he meant to say Dynamics ERP , not Dynamics CRM, would be hosted on Azure before the end of 2012. The CRM team got back to me on May 9 with the following statement:
“The next versions of Microsoft Dynamics GP and NAV will be cloud enabled for Windows Azure by the end of the year. We also intend to move Microsoft Dynamics CRM Online to Windows Azure. We have nothing further to share at this time.”
More recently, Microsoft's plans to add a persistent virtual machine capability -- allowing users to host SharePoint, SQL Server and Linux (!) on Azure -- made a reappearance on Redmond's roadmap. So far, there's been no public sightings of the expected persistent VM, but who knows... maybe a spring release of Windows Azure could bring that promised capability to testers....