Microsoft faces UK antitrust challenge from Slack over Teams integration

Salesforce (NYSE:CRM), through its messaging platform Slack, has launched legal action against Microsoft (NASDAQ:MSFT) in London’s High Court, accusing the tech giant of anticompetitive conduct linked to its Teams software.

The claim, filed on April 23 by Slack Technologies LLC and associated entities, alleges that Microsoft restricted competition by integrating Teams with its broader software offerings. A Slack spokesperson said the case was brought “because Microsoft’s practices harmed competition, using tying and bundling of Teams to limit customer choice”.

Microsoft rejected the allegations, with a company spokesperson stating the case is without foundation.

“Slack’s lackluster growth, compared to Zoom and Teams, was based on inferior capabilities when COVID-19 hit in 2020, and had nothing to do with Microsoft,” the spokesperson added.

Slack previously raised similar concerns in 2020 with the European Commission,…