Workplace chatting service Slack has filed a complaint in the EU against Microsoft, accusing the software company of anti-competitive behavior.
Slack says Microsoft illegally bundles Microsoft Teams messaging product, which is similar to Slack, into Office 365, its package of email and other widely-used business software. Slack says Microsoft forces companies to install it for millions and blocks its removal.
Microsoft Corp. didnâ€™t immediately respond to an emailed request for comment.
Slack Technologies Inc., which went public in 2019, has been growing rapidly. It reported $201.7 million in sales in its February-April quarter, up 50% from the same time last year. It also reported 122,000 paid customers, up 28% from when the company went public in April 2019.
Slack still faces tough competition, particularly from Microsoftâ€™s Teams software. Slack last month announced an expanded partnership with Amazonâ€™s cloud computing division, an attempt to join forces with Microsoftâ€™s chief rival. It more recently announced it is buying Rimeto, which creates detailed staff directories.
The European Commission will review the complaint and decide whether to open a formal investigation.