European Union competition authorities have escalated their regulatory push against Big Tech by targeting the cloud infrastructure services of Amazon and Microsoft, two companies that dominate a market increasingly vital to the bloc's digital future. The designation of Amazon Web Services and Microsoft Azure as "gatekeepers" under the Digital Markets Act represents a significant broadening of EU enforcement beyond the social media platforms, search engines and app stores that have previously drawn regulatory scrutiny. The preliminary findings, announced following a seven-month investigation, would subject these cloud providers to binding obligations designed to restrict their market dominance and ensure fair competition across the sector.
The gatekeeper classification carries substantial implications for how these companies operate across Europe. Both AWS and Microsoft Azure would face restrictions on what regulators term self-preferencing, where companies favour their own services over competitors. The designations would also mandate interoperability requirements, forcing the cloud giants to allow easier switching between platforms, and compel them to grant customers greater control over their data through improved portability mechanisms. For European businesses and governments reliant on these services—which now include over half of all EU enterprises—these changes could reshape the cloud computing landscape and potentially reduce vendor lock-in costs that have historically been a barrier to competition.
The regulatory action reflects growing concern among EU officials that cloud infrastructure has become foundational to Europe's competitive position in artificial intelligence development. Henna Virkkunen, the EU's technology chief, characterised cloud services as a cornerstone of the European economy and an essential prerequisite for AI advancement. Her statement emphasised that fair, open and competitive cloud markets are necessary not merely for economic efficiency, but for securing what policymakers describe as Europe's technological sovereignty. This framing reveals anxieties about dependence on American tech platforms for critical digital capabilities, particularly as competition with other global powers intensifies.
The Commission's assessment drew heavily on the structural advantages wielded by AWS and Microsoft Azure relative to their competitors. EU officials cited their substantially larger revenues compared to rivals, greater operational capacity, and capacity for significant infrastructure investment as factors conferring market power. Beyond these financial metrics, regulators emphasised the entrenched nature of these companies' customer bases, which create switching costs and lock-in effects that discourage migration to alternative providers. The integration of artificial intelligence tools and strategic partnerships involving cloud services also featured prominently in the Commission's reasoning, with officials concluding that these capabilities have become determinative factors in how large organisations choose their cloud providers.
Both companies have moved quickly to contest the preliminary findings, each advancing distinct strategic arguments. Amazon Web Services disputed the characterisation of market dominance by pointing to the breadth of cloud options available to European customers, suggesting regulators had underestimated actual competitive pressures. The company warned that additional regulatory burdens under the DMA would compound existing EU cloud regulations, particularly the Data Act, creating a layered compliance regime that could discourage investment and innovation from Europe. This argument signals AWS's concern that multiple overlapping regulations will make European operations less attractive relative to other markets.
Microsoft adopted a different defensive posture by drawing attention to what it characterised as regulatory blind spots. The company highlighted the expanding influence of Google Cloud and Google's Gemini artificial intelligence services, arguing that the Commission's focus on AWS and Microsoft would inadvertently advantage Google by leaving its operations unencumbered. This counterargument attempts to reframe the regulatory action as incomplete and potentially market-distorting, suggesting that comprehensive enforcement should target all major cloud competitors simultaneously rather than singling out two providers. Such competitive sniping illustrates how gatekeeper designations under the DMA become instruments in inter-corporate rivalries as well as regulatory mechanisms.
The implications for Southeast Asian technology markets and companies merit consideration, even though the regulation directly applies to European operations. Many regional technology firms, particularly in financial services, e-commerce and manufacturing, rely on AWS and Microsoft Azure for cloud infrastructure. Should the DMA requirements increase compliance complexity or operational costs for these American providers, regional customers could face higher service fees or reduced service innovation. Conversely, if gatekeeper obligations successfully reduce switching costs and improve interoperability, Southeast Asian companies might benefit from greater flexibility in managing their cloud deployments or negotiating contracts with these providers.
The decision to expand DMA enforcement into cloud infrastructure also signals the EU's broader regulatory philosophy regarding digital markets. Rather than confining oversight to consumer-facing platforms, Brussels is now intervening in business-to-business infrastructure that serves as a foundation for broader digital services. This represents a more comprehensive approach to regulating digital market power than many other jurisdictions, including Australia and the United Kingdom, have undertaken. The regulatory precedent being set in Europe could influence policy conversations elsewhere, particularly in Southeast Asian economies weighing how to balance promoting technological development with managing the concentrated power of major technology intermediaries.
The formal process now moves to a response phase where Amazon and Microsoft can present counterarguments and evidence to contest the Commission's preliminary assessment. This period allows the companies to propose remedies or argue why gatekeeper designation is unwarranted. The EU competition enforcer indicated that a final decision would follow within coming months, suggesting the timeline for resolving this matter spans the remainder of the year. During this window, the companies will likely deploy substantial legal and economic resources to challenge the findings, and policymakers may seek to negotiate technical standards or behavioural commitments that could alter the regulatory outcome without formal gatekeeper designation.
For observers tracking digital regulation globally, this enforcement action demonstrates the expanding scope of European oversight and its focus on systemic market structures rather than isolated anticompetitive conduct. The DMA framework, which commenced enforcement in late 2024, is proving to be a potent tool for targeting large technology intermediaries across multiple sectors. Whether this regulatory pressure ultimately reshapes market competition in cloud infrastructure or becomes subject to legal challenge will have ramifications extending well beyond Europe's borders. Technology companies worldwide, including those serving Southeast Asian markets, are watching how the Commission's enforcement approaches develop as indicators of the regulatory environment they will face in the coming years.
