The European Commission has accused Microsoft of violating EU antitrust rules by tying its Teams messaging app to its Office 365 and Microsoft 365 software, potentially giving it an unfair advantage over competitors. The commission suspects Microsoft of limiting customer choice by bundling Teams with its popular productivity suites, hindering competition in the remote communication and collaboration market. Despite some changes made by Microsoft last year to address the concerns, the commission believes more needs to be done to restore competition. The company now has an opportunity to respond before a final decision is made, which could result in a significant fine or required remedies. This action comes on the heels of similar regulatory scrutiny faced by Apple in Europe, highlighting Brussels' role as a watchdog for Big Tech. Rival companies like Slack have welcomed the commission's investigation, hoping for a swift and effective remedy to promote fair competition and innovation in the digital ecosystem.