Google is also announcing specific enhancements to Apps, including the ability for someone to delegate use of their mailbox and for administrators to set policies and parameters for e-mail retention.

Matthew Glotzbach, Google Enterprise product management director, acknowledged that from the outside the decision to graduate Gmail, Calendar, Docs and Talk out of beta at once may seem arbitrary.

However, the removal of the beta label from those services is rather the "culmination" of a years-long process of maturation through which the products have exceeded internal goals for reliability, quality and usability, he said.

Glotzbach also granted that Google lacks a uniform set of criteria across its different product groups for determining when a product should and shouldn't carry the beta label.

"We haven't had a consistent set of standards across the product teams. It has been done individually. We're going to fix that," he said.

While the beta issue is less important for consumers, it is a major roadblock for the Enterprise group's efforts to market Apps, especially when dealing with large companies and their IT managers and CIOs.

"This helps ease the minds of IT executives at companies that have looked at beta as a potentially distracting or concerning label," Glotzbach said.

Now, Apps, which also includes the Sites wiki and site creation application and Google Video, a YouTube-based video-sharing service for business, will have no beta-labeled components.

Gmail, Calendar, Docs and Talk are also losing their beta tags as stand-alone services for consumers.

Google has been trying hard to lure large businesses to Apps since the introduction of the Premier version of the suite in February 2007, and has accelerated those efforts recently with enhancements like offline access for Gmail, support for BlackBerry devices and a synchronization plug-in for Outlook.

"We've been knocking down barriers one by one for enterprise adoption of Apps Premier," he said.

The company is now seeing on average one large company adopting Apps Premier per week, Glotzbach said. Google defines a large Apps account as one with 1,000 or more Premier seats.

On Tuesday, Google is announcing another such customer win. Fairchild Semiconductor is moving about 5,500 end users in 18 offices worldwide from Lotus Notes to Apps Premier, which costs US$50 per user, per year.

In the coming weeks, Premier customers will get e-mail delegation capabilities, which come in handy when assistants need access to executives' mailboxes to deal with messages on their bosses' behalf.