Marc Benioff, Salesforce.com's CEO, has struck back at Microsoft during Salesforce.com's annual conference, Dreamforce, in San Francisco, calling the company an "evil empire".
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"Not everyone wants us to have this fun. The old industry is trying to do everything they can to stop this. We call it FUD. One company in particular has gone all out because they're nervous," said Benioff, adding that Microsoft has an evil empire-type focus.
Microsoft sued Salesforce.com earlier this year claiming it had infringed nine patents. The case sought to prevent Salesforce.com from providing efficiency features for its CRM software that Microsoft claimed it had patented.
"They don't want us going into the cloud. Microsoft sued us. They tried it, they lost. We prevailed and succeeded," said Benioff.
Benioff told reporters following a keynote speech yesterday, "[Microsoft] is trying to stop the cloud because they're a monopoly and that's what monopolists do. They tried to create this uncertainty and doubt and fear."
Microsoft invited Salesforce.com and Oracle customers to consider its 'Cloud CRM for Less' in an open letter released this week.
Michael Park, corporate vice-president, sales, marketing and operations at Microsoft Business Solutions, said the company is offering rebate of up to $200 (£127) for each user switched to Microsoft Dynamics CRM Online between now and 30 June 2011.