Zoom has expressed concerns to regulators in various jurisdictions about what it sees as Microsoft's allegedly anti-competitive behaviour. Specifically, over the past year, Zoom has raised issues with the US Federal Trade Commission (FTC) and competition enforcers in the European Union, United Kingdom, and Germany. Zoom is worried about Microsoft's preference for its Teams videoconferencing software, which it believes is achieved through price bundling and product design.

Zoom CEO Eric Yuan has spoken against Microsoft's bundling practices, calling for the FTC to investigate. Yuan emphasized the importance of fairness in competition and compared it to sports where having a better team does not guarantee a win if the other side gets extra points for each shot.

Microsoft is currently being investigated by the EU's competition watchdog over possible antitrust violations related to bundling Teams with Microsoft 365 and Office 365 for businesses. The investigation was initiated after an initial complaint from Salesforce's Slack messaging platform. Germany's Federal Cartel Office has also opened an investigation into Microsoft's bundling of Teams with the company's other productivity software, among other issues.