Google is opening up its Apps productivity suite to more than 60 of its other services, allowing users to integrate their applications with tools such as Google Voice, Reader and AdWords.
The move will allow administrators to provide different sets of applications to different groups of users, and "empower workers in remarkable new ways", the company said in a blog post.
"For example, you could equip your marketing team with Picasa Web Albums so they can collect and share photos from customer appreciation events, and let that team publish your company's blog with Blogger."
Google will also change its premium application packages, allowing enterprise users to purchase the Google Apps for Business package at an annual cost of $50 (£31) per user.
The company is also offering specialised packages for government agencies and educational institutions.
The expansion comes as Google faces an increasingly crowded market for enterprise productivity applications. Along with web-based competitors such as Zoho, larger vendors like IBM and Microsoft have launched cloud-based offerings of their own.
Melissa Webster, a vice president at IDC, told V3.co.uk that the market could be entering a critical stage.
"I think it is going to be a tough couple of years with a lot of innovation, " she said. "It is going to be a feature-function platform shootout."
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