Digital Markets Act Targets Microsoft Azure and Amazon Cloud Services as EU Launches Explosive and Sweeping Investigation in 2026

The European Commission announced a series of market investigations (via CNBC) aimed at two of the world’s largest cloud providers: Microsoft Azure and Amazon Web Services (AWS). As pointed out in a report by Reuters, the goal is to determine whether these services are acting as “gatekeepers” and potentially curbing competition within Europe’s rapidly growing cloud market.​

This marks a significant escalation in regulatory scrutiny, with the Commission applying the Digital Markets Act (DMA)—a landmark EU law designed to rein in giant tech platforms. While both Azure and AWS have not formally met the DMA’s size thresholds for “gatekeeper” status, the investigations will assess whether their market role and sectoral control warrant special designation as important gateways between businesses and consumers.​

Why the EU Is Investigating Microsoft Azure and AWS

Recent analyses have underscored how Azure and AWS occupy dominant positions—collectively holding more than two-thirds of the EU market. The Commission is exploring if specific business practices, such as interoperability obstacles, data access limitations, and aggressive bundling, restrict fair competition or disadvantage European firms and consumers.​

EU antitrust chief Teresa Ribera stated, “We will also look at whether the DMA’s existing rules need to be updated so Europe can keep pace with fast-evolving practices in the cloud sector”. The move follows complaints from smaller competitors about limited service choice and rising costs, fueled by the concentration of power among US-based providers.​

Questions and Scope of the Investigation

The Commission’s probes will address several core issues:

• Whether Azure and AWS act as de facto gatekeepers even if they do not hit the numerical DMA criteria.​

• How their contractual terms, interoperability policies, and vertical integration may affect other cloud vendors and enterprise customers.​

• If the DMA adequately addresses potentially unfair and anti-competitive practices or if new amendments are required to reflect sector dynamics.​

Under current DMA rules, designated gatekeepers are compelled to ensure interoperability and not unfairly favor their own services. Non-compliance could lead to fines of up to 10% of global annual turnover—an eye-watering penalty for any multinational tech company.​

Reactions from Amazon, Microsoft, and the Industry

Both Microsoft and Amazon have responded cautiously. Microsoft stated its readiness to cooperate fully with the EU’s enquiries, emphasizing its commitment to fair competition and innovation. AWS, meanwhile, warned that stringent gatekeeper designations risk stifling invention and could raise costs for European business customers.​

Smaller European cloud providers and business users have welcomed the Commission’s initiative, hoping for greater choice, lower costs, and fewer service outages. Recent technical disruptions, including a Microsoft Azure outage affecting airlines and an AWS event knocking out streaming platforms, have fueled demands for more resilient and accessible cloud alternatives.​

What This Means for Microsoft Azure’s Future in Europe

For Microsoft, the investigation is a pivotal moment in its broader European cloud strategy. As a leader in digital transformation, Azure’s compliance posture, technical openness, and pricing structures will face intense scrutiny—not just regulatory but also market-driven.

Should the Commission determine that Azure qualifies as a “gatekeeper,” new rules will force it to open up APIs, support seamless cross-service integration, and adopt fairer contracting. These measures could level the playing field for smaller vendors and potentially shift how enterprise IT budgets are allocated across providers.​

Timeline and Next Steps

The EU aims to conclude the market investigations within 12 months. If new rules or designations are imposed, they could take immediate effect, fundamentally reshaping Europe’s cloud landscape. Microsoft Azure and AWS may face more nuanced and locally-tailored compliance requirements going forward.​

The Battle for European Digital Sovereignty

This regulatory push reflects Europe’s growing ambition to forge digital sovereignty, reduce dependency on foreign cloud technology, and better protect local businesses from global monopoly risks. The DMA joins other legal efforts such as GDPR and the AI Act, establishing the EU as a global standard-setter in technology regulation.​

For enterprise clients, developers, and policy-makers, the outcomes of this probe will have long-ranging consequences—impacting technology choice, costs, compliance efforts, and the future competitiveness of Europe’s digital economy.