Microsoft has agreed to separate its Teams video and messaging app from its Office productivity packages in Europe, concluding a long-running antitrust battle with regulators in Brussels. The settlement, announced Friday, marks a major moment in the European Union’s efforts to curb practices that tilt markets in favor of powerful tech companies.
The European Commission said the commitments will make workplace software more competitive and interoperable, ensuring companies can choose collaboration tools without being locked into Microsoft’s ecosystem. As part of the deal, Microsoft will offer Office 365 and Microsoft 365 without Teams at a reduced price.
How the Case Began: Slack’s Challenge
The dispute dates back to 2020 when Slack, later acquired by Salesforce, filed a formal complaint against Microsoft. Slack argued that bundling Teams with Office unfairly gave Microsoft an advantage, especially during the early stages of the pandemic when demand for remote communication tools was skyrocketing.
Slack maintained that Microsoft’s practice restricted competition by forcing businesses to adopt Teams regardless of whether they wanted it. Regulators in Brussels agreed, warning that tying the services together risked squeezing out rival apps like Slack and Zoom.
Microsoft initially attempted partial changes, unbundling Teams in some European markets. However, both competitors and regulators found those steps inadequate, prompting deeper scrutiny and ultimately leading to Friday’s settlement.
What Microsoft Agreed To
The settlement introduces several new rules Microsoft must follow:
- Pricing changes: The company will expand the gap between bundled and unbundled versions of Office by 50 percent, with differences ranging between €1 and €8 per user depending on the plan. These adjustments will apply for at least seven years.
- Improved interoperability: Microsoft will publish documentation to help rival communication tools integrate with Office products. This obligation will last a decade.
- Data portability: Businesses will be able to export Teams chat data to other platforms, reducing lock-in effects.
- Clear marketing: Microsoft must make it obvious in promotional materials that Office versions are available both with and without Teams.
Although negotiated in Europe, Microsoft plans to extend these measures globally to maintain consistency across its markets.
Avoiding Fines
By settling, Microsoft avoids potentially massive financial penalties. Under EU law, fines for antitrust violations can reach 10 percent of a company’s global annual revenue. For Microsoft, that could have run into billions of euros.
This is not the company’s first clash with European regulators. In the 2000s, Microsoft was fined heavily for bundling Internet Explorer with Windows. This time, Brussels opted for a binding agreement instead of a fine, showing a preference for practical changes over punishment.
Wider Tensions Over Tech Regulation
The settlement comes at a time when the EU is intensifying scrutiny of U.S. tech giants. Just last week, regulators fined Google €3.5 billion over alleged anti-competitive practices in online advertising. The decision sparked political friction, with U.S. President Donald Trump criticizing Europe’s actions and threatening tariffs on European goods.
Despite the diplomatic tensions, EU officials argue these interventions are vital to protect competition and consumer choice in fast-moving digital markets.
Impact on Microsoft and Rivals
For Microsoft, unbundling Teams means it must now compete more directly with rivals based on product quality, not pre-installation. Teams remains widely used in businesses, but the company will need to convince customers it is the best option rather than relying on its integration with Office.
Competitors like Slack and Zoom are expected to test how effective Microsoft’s interoperability commitments are in practice. If they succeed, the changes could open the door to greater adoption of alternative platforms in the European workplace software market.
Analysts suggest the case could set an important precedent, influencing how regulators approach similar bundling practices by other companies such as Google or Apple.
The commitments will be monitored closely over the next decade. Regulators will track whether Microsoft honors its obligations and whether rivals truly benefit from easier integration with Office.
For European businesses, the settlement provides more flexibility. Organizations can now select collaboration tools that best suit their needs without paying extra for services they may not use. Over time, this could reshape the competitive landscape, pushing companies to innovate rather than rely on dominance through bundling.
