Google plans to aggressively add new applications and capabilities to its Web-hosted Apps software suite for businesses, and will likely leave the price unchanged as it builds out the service, a company official said Tuesday.

The comments signal a move that will likely heat up the competitive fire between Google and Microsoft in the market for office productivity, communication and collaboration software.

Google, a recent entrant to this market, has opted to provide its suite via a software-as-a-service (SaaS) model, a newly popular approach in which vendors host the software and data, and deliver it to customers via the Internet.

Microsoft, a longtime player with its ubiquitous Office suite and Outlook/Exchange messaging and collaboration platform, is starting to react to this trend, although its software is still primarily designed to be installed on customers' own servers.

Currently, Google offers a free, ad-supported Apps version designed for individuals and very small businesses, and a fee-based version called Premier that is aimed at companies of all sizes and costs US$50 per user per year. That is considered an aggressive price versus the cost of comparable Microsoft software.

Although the individual and business versions share the same core applications, such as Gmail, word processor, calendar, spreadsheet and presentation programs, Apps Premier has a variety of IT management tools as well as APIs (application programming interfaces) for integration with other software.

"Our intention is to really put more value at that price point and offer some amazing proposition to companies," said Dave Girouard, president of Google's Enterprise unit, at the Pacific Crest Technology Leadership Forum.

While not ruling out adding other pricing tiers for certain technology, Girouard stressed that the current strategy is focused on increasing the user base by making the suite more attractive without increasing its cost.

"We expect to hold the price point and add more and more value at that price point," he said. "We want to have commercial relationships with lots of companies, and it matters more that we have that than exactly how much dollar per user we're getting."

"We can certainly hold that price point. We can continue to put more capabilities there. The cost of an additional application to us is tiny, it's hardly material. There are certainly types of applications that we could add that would add cost and we would price appropriately, but I don't expect the price to climb. That wouldn't be my expectation," he added.

Girouard didn't provide any specifics about the types of applications or new features Google is planning to add to Apps.