February 24, 2024

European authorities are currently engaged in a thorough investigation to determine whether Microsoft’s practice of bundling its Teams software with Office 365 constitutes anticompetitive behavior. The European Commission acted upon a formal complaint filed in 2020 by Salesforce-owned Slack. It is alleging that Microsoft has been unlawfully circumventing competition in the collaboration tools market. At the heart of the issue is the concern that by combining Teams with its entrenched suite of productivity applications like Word and Outlook. Microsoft may be obstructing customers from exploring alternative collaboration solutions. It is potentially leading to anti-competitive tying or bundling. Furthermore, European antitrust officials are also expressing apprehensions about the interoperability of Microsoft’s software with third-party products.

Investigation Into Microsoft’s Bundling Strategy

The European Commission, responsible for ensuring fair competition within the EU. It issued a statement expressing its reservations about Microsoft’s bundling practices. By integrating Teams with its widely used productivity suite, the tech giant could be preventing other communication and collaboration tool suppliers from effectively competing in the market. The concern over anticompetitive tying and bundling arises from the possibility that customers may feel constrained to use Microsoft Teams due to its prepackaged inclusion with Office 365, limiting their ability to explore other options.

Microsoft’s Response and Commitment to Cooperation

In response to the investigation, Microsoft has conveyed its cooperation and respect for the European Commission’s work in this matter. A Microsoft spokesperson emphasized the company’s commitment to addressing the Commission’s concerns and finding suitable solutions. Acknowledging the seriousness of the situation, Microsoft aims to participate actively in the investigation process to reach a satisfactory resolution.

The EU’s Stance on Potential Commitments

EU spokesperson Arianna Podesta informed reporters during a press briefing that discussions on potential commitments by Microsoft to rectify the situation are currently premature. Before any commitments can be consider, the authorities must first establish whether there has been a breach of antitrust considerations. This indicates the EU’s cautious approach to the investigation, ensuring that all aspects are thoroughly examine before any conclusions are drawn.

Microsoft’s Previous Antitrust Violation

This in-depth investigation marks a notable escalation in the EU’s scrutiny of Microsoft’s activities concerning antitrust matters. Notably, in 2013, the company faced a fine due to a violation related to competition. The fine was imposed after Microsoft failed to fulfill its commitment to provide European consumers with a choice in web browsers.

Slack’s Allegations

Slack’s original complaint, which triggered the current investigation, revolved around Microsoft’s alleged imposition of Teams on its customers. According to Slack, Microsoft makes it difficult for customers to remove Teams from their setups. It does not fully disclose the true costs involved for enterprise customers. Slack argues that its approach allows customers greater freedom in mixing and matching services, as opposed to Microsoft’s closed ecosystem of proprietary products. This disagreement represents a clash between two distinct philosophies for the future of digital ecosystems: gateways versus gatekeepers.


The European antitrust investigation into Microsoft’s bundling of Teams with Office 365. It is a crucial examination of the company’s practices in the collaboration tools market. The EU is concerned that Microsoft’s actions may lead to anticompetitive outcomes and hinder fair competition. As the investigation progresses, Microsoft’s commitment to cooperation and the EU’s cautious approach will shape the outcome. There is potential resolutions to address the Commission’s concerns. In the rapidly evolving tech industry, the intersection of competition and integration will continue to be a focal point of regulatory attention.