EU Antitrust Regulators Target AWS and Azure for DMA 'Gatekeeper' Status, Expanding Regulation to Cloud Infrastructure

On June 25, 2026, the European Commission initiated a profound shift in global technology regulation, issuing preliminary findings that Amazon Web Services (AWS) and Microsoft Azure function as "gatekeepers" under the Digital Markets Act (DMA). This marks the first time the bloc has targeted the foundational infrastructure of the internet rather than consumer-facing applications like search engines or app stores.[1][2][3]

The core claim advanced by European regulators is that cloud computing is no longer a neutral utility, but the load-bearing wall of the modern digital economy. EU technology chief Henna Virkkunen stated that cloud services are now a prerequisite for artificial intelligence, noting that over half of all European businesses are entirely reliant on public cloud infrastructure.[1][4][5][6]

To address this concentration of power, the Commission is attempting to apply the DMA to enterprise server architecture. If finalized, the gatekeeper designation would legally compel AWS and Azure to dismantle alleged customer lock-in tactics, mandate interoperability with third-party services, and eliminate barriers to data portability.[2][3][4][7]

The quantitative evidence supporting the Commission's intervention is substantial, though legally complex. Industry data indicates that AWS and Azure collectively control approximately 70 percent of the European cloud computing market. Regulators point to the companies' significant revenues, massive operational scale, and investment capacity that vastly outpaces regional competitors.[4][6][7]

However, in an unprecedented legal maneuver, the Commission bypassed the DMA's own standard numerical thresholds for gatekeeper designation. Instead, regulators relied on a qualitative assessment, arguing that the two platforms act as an unavoidable gateway between businesses and their customers due to their entrenched market centrality.[1][4][5]

The strongest evidence supporting the EU's regulatory push centers on the mechanics of vendor lock-in. The Commission's seven-month investigation concluded that businesses building their digital architecture within a single cloud ecosystem face prohibitive switching costs that stifle market fluidity.[5][6]

These barriers are both technical and financial. Proprietary software tools, complex data egress fees, and bespoke architectural requirements make migrating from AWS to Azure—or to a smaller European provider—a multi-year, capital-intensive engineering challenge. The DMA aims to force the development of standardized protocols and fee structures that would allow seamless multi-cloud deployments.[2][3][5]

The timing of the intervention is explicitly tied to the rapid deployment of artificial intelligence. The Commission claims that AWS and Azure are leveraging their cloud dominance to capture the emerging AI market before competitors can establish a foothold.[6][7]

The evidence suggests that both companies are effectively retaining the surging demand for AI computation within their own ecosystems through exclusive partnerships and bundled AI tools. Regulators fear this creates a compounding network effect, where the infrastructure providers dictate the winners and losers of the AI software layer.[4][6][7]

The incumbent providers strongly contest the Commission's findings, presenting evidence of a highly competitive and dynamic market. Amazon has formally challenged the assessment, citing a commissioned economic study that identifies over 200 active cloud competitors operating within Europe.[2][4]

Amazon argues that the EU's analysis fundamentally disregards the breadth of choices available to enterprise customers. Furthermore, AWS representatives assert that the European Union already possesses comprehensive cloud regulation via the recently enacted Data Act, warning that overlapping DMA mandates will deter infrastructure investment.[2][7]

Microsoft's counter-claim focuses on market trajectory rather than current snapshots. The company argues that a two-gatekeeper framing is analytically flawed because it ignores the rapid, well-capitalized growth of Google Cloud, which is aggressively competing for enterprise AI workloads.[4][7]

Despite the strong claims from both sides, the regulatory outcome remains highly uncertain. The June 25 announcement is a preliminary finding, not a final legal ruling. Both Amazon and Microsoft now have six months to examine the Commission's evidentiary file and submit formal written defenses.[1][5][6]

If the Commission confirms its preliminary view in late 2026, the enforcement mechanisms are severe. Non-compliance with DMA gatekeeper obligations carries penalties of up to 10 percent of a company's global annual turnover, escalating to 20 percent for repeat offenses.[4]

The geopolitical uncertainty surrounding the proceeding is also significant. The final decision is expected in the fourth quarter of 2026, arriving amid strained trade relations between Washington and Brussels. The Trump administration has previously characterized aggressive European tech regulation as inherently anti-American, turning this cloud infrastructure debate into a potential macroeconomic flashpoint.[4]

Ultimately, the evidence pack reveals a fundamental clash of paradigms. Regulators view the cloud as a public utility requiring strict interoperability to protect startups and ensure tech sovereignty. The infrastructure providers view it as a highly differentiated, capital-intensive product where forced commoditization will stifle the very innovation required to power the next generation of artificial intelligence.[2][3][5][7]