Microsoft made crystal clear last week that it is herding customers toward 64-bit platforms. And while users and analysts say that's the right direction, they also believe companies may be slow to fall in line.

With the next versions of many of Microsoft's servers, including Exchange 12, Compute Cluster Server and the R2 release of the Longhorn server, Microsoft will produce only 64-bit editions.

The announcement was one of many the company made last week, including the debut of a desktop search engine that includes management and deployment controls for IT, the first release under Microsoft's Dynamics brand for its struggling business applications.

Microsoft is hitching its software wagon to 64 bit and its promise of a more robust and powerful computing platform. The platform, however, comes with special design considerations that differ from 32-bit platforms, especially related to firmware, hard disk partitions and device drivers. And while the x64 architecture supports 32-bit applications, the ramp-up to 64 bit will align with applications optimized for that platform, experts say.

Microsoft already has 64-bit versions of servers, including the recently released SQL Server 2005, but there also is a 32-bit version. Microsoft will have a 32-bit version of Windows Server Longhorn supported until 2017.

"It is about time Microsoft put its pants on and said 'you know, if you want to run our technology this is what it takes," says Nelson Ruest, a consultant and systems integrator with Resolutions Enterprises in Victoria, British Columbia. "In terms of Exchange 12, they can break memory barriers, they can break TCP/IP barriers in terms of the number of connections. It's more stable, more performance and better power."

The message is a good one, but users are not ready to abandon their 32-bit platforms.

"We do not have a 64-bit strategy yet," says Will Nelson, COO for Compass Health in Mount Vernon, Wash. He says the company will take cues from its services partner Azaleos, which provides the healthcare company with a preconfigured appliance running Exchange and remote management services. "With Azaleos there would be a lot of coordination with them in moving to that platform."

Some analysts say early adopters will be those who are desperate to step up their server and application performance.