EU antitrust regulators look at “gatekeeper” status for Microsoft and Amazon cloud units, Reuters reports

European Union antitrust regulators are considering whether to treat major cloud computing businesses tied to Microsoft and Amazon as “gatekeepers,” a Reuters report said on June 25, pointing to concerns about how large platforms can influence access to cloud services across the market.

The reporting, carried by Yahoo Finance, focuses on Microsoft’s cloud operations and Amazon’s corresponding cloud unit. The EU’s approach in such cases generally centers on whether a company’s platform role gives it durable market power and the ability to control key routes for businesses that depend on those services.

The “gatekeeper” framework is designed to impose additional obligations on covered firms, with the goal of reducing unfair practices and improving interoperability and choice for customers and business users. For cloud providers, that can translate into scrutiny of how software and services are packaged, offered, and connected to third-party products that run on or alongside cloud infrastructure.

Microsoft, which has long positioned Azure as a platform for enterprise applications and data services, could face new compliance requirements if regulators confirm gatekeeper status for a relevant cloud unit. Amazon similarly markets its cloud platform, Amazon Web Services, as a core infrastructure layer for application developers and businesses, which is why it is often in the regulatory spotlight when the EU examines platform power.

Regulators typically assess gatekeeper candidates against criteria such as size and reach in the EU, the importance of the service as an entry point for business users, and whether the company holds an entrenched position that makes competitors’ routes to customers less viable. If an entity is designated, it can be subject to rules intended to limit certain platform behaviors and strengthen business user access.

A practical consequence for cloud customers is that obligations could affect product design and customer contracting terms, especially where business users rely on cloud marketplaces, identity and access tools, billing interfaces, or service interoperability. However, the Reuters report as presented in the Yahoo Finance feed does not specify which exact Microsoft or Amazon cloud elements regulators are examining, nor what timeline or procedural step is underway.

For Microsoft, any shift toward gatekeeper oversight would add to the company’s existing European compliance footprint, including ongoing scrutiny of technology markets and competition issues. It also would come alongside the EU’s broader push for digital governance, which increasingly reaches beyond advertising platforms and into infrastructure services that shape how software is delivered and operated.

What is not clear from the available reporting is the scope of the designation, whether regulators will target a specific legal entity within a cloud organization, and whether the EU’s process is at an investigation stage or closer to a formal decision. Microsoft also did not disclose any additional details in the material referenced by the Yahoo Finance repost, according to what is visible in the provided account of the Reuters item.

Investors and customers are likely to watch for additional regulatory documents, any formal statements from the European Commission or related EU bodies, and whether Microsoft and Amazon respond with compliance plans or legal arguments. Any eventual determination could also influence how cloud competitors position offerings in the EU market and how enterprise buyers evaluate vendor lock-in risk.