Microsoft has announced that it will separate its chat and video app Teams from its Office product and make it easier for competitors to work with its software, in response to an ongoing antitrust investigation by the European Commission. The move follows a complaint by Slack, a competing workspace messaging app owned by Salesforce. However, rival companies have suggested that Microsoft’s proposed changes may not be sufficient to avoid an EU antitrust fine. The Commission is expected to decide whether to issue formal charges against Microsoft in the autumn. The company could face fines for tying or bundling products together, as it has previously done.