Amazon and Alphabet unit Google criticised Microsoft’s cloud computing changes on Tuesday, saying they limit competition and discourage customers from switching to rival cloud service providers.

The U.S. software giant on Monday announced amended licensing deals and other changes that will take effect on Oct. 1 and which they say will make it easier for cloud service providers to compete.

Amazon, Google, Alibaba and Microsoft’s own cloud services will be excluded from the deals.

Microsoft’s move came after smaller European Union competitors took their grievances about its cloud service practices to EU antitrust regulators, which subsequently quizzed market players on the issue and what impact they have experienced.

Amazon, the leading cloud service provider trailed by Microsoft and Google, was scathing in its critiques.

Google’s vice president for government affairs and policy Google Cloud Marcus Jadotte was equally critical.