BRUSSELS - EU antitrust regulators are seeking more information on Microsoft's practices from rivals and other companies in a case triggered by Salesforce.com's workspace messaging app Slack, people familiar with the matter said on Thursday.
The European Commission last month sent out another batch of questionnaires, a strong sign that the European Union's competition enforcer is preparing the ground for opening a formal investigation, the people said.
(Reporting by Foo Yun Chee; Editing by Mark Potter)