The head of Microsoft's customer relationship management software business Thursday parried verbal attacks by executives from rival Salesforce.com over Microsoft's belated introduction of a hosted CRM offering.

“Talk is cheap,” Brad Wilson, general manager of Microsoft’s Dynamics CRM unit, said in an interview at the company’s Worldwide Partner Conference 2007 in Denver. “We are more generous to partners, more affordable to customers and we have a better product.”

For instance, Wilson said, Microsoft's promised compensation to business partners that resell and support its new Dynamics Live CRM software – amounting to 10 per cent of the licence revenue annually – beats what is paid by other vendors, including Salesforce.com.

On Tuesday at the conference, Microsoft unveiled the long-expected Live CRM technology, a hosted offering that drastically undercuts Salesforce.com’s more-established software on price. Microsoft said it will charge as low as $39 (£19.13)per user on a monthly basis, about 40 per cent less than Salesforce.com's lowest monthly price of $65 (£31.88) per user.

Marc Benioff Salesforce.com's CEO, responded on Wednesday, saying that Microsoft’s pricing “speaks more to the inferior quality of the technology than its competitiveness as a product”.

Salesforce.com “isn't sold in Best Buy”, Benioff continued. “It’s sold by a professional services organisation that delivers the right price to the customer and answers all their needs."

Bruce Francis, vice-president of corporate strategy at Salesforce.com, also chimed in, quipping that Microsoft “has announced this service more often than Roger Federer has won Wimbledon”.

But Wilson also cited improvements that Microsoft is making in its upcoming ‘Titan’ release of Dynamics CRM, which will be the base version for the hosted offering. The promised enhancements include a ‘multitenancy’ feature that will make the software run more efficiently, he said.

Steve DeMarco, vice-president of business development at Xactly, a vendor of hosted sales management software, said he was impressed by demos of Dynamics Live CRM that he saw at the Microsoft partner conference.

“I thought that it was very functionally rich, and that it looked ideal for that focused marketplace Microsoft does so well in,” DeMarco said. Xactly's software is currently integrated with Salesforce.com’s CRM applications, but DeMarco said the company plans to tie it to Microsoft’s on-demand offering as well.

Microsoft said an “early access programme” for Dynamics Live CRM will begin during the current quarter and continue until year’s end. The software will be offered in both professional and enterprise editions and will initially be hosted in Microsoft's corporate data centres, although the company plans to allow business partners to begin hosting the applications late this year.

Marc L. Songini contributed to this story.