UK Regulators Criticize Microsoft's Cloud Dominance as Azure Revenue Surges Past $75 Billion

The U.K. Competition and Markets Authority delivered a sharp critique to Microsoft on Thursday, following a strong performance period for the company's cloud operations. In the 12 months through June 30, Azure cloud services brought in more than $75 billion, representing 34% growth year over year, according to remarks from Microsoft Chairman and CEO Satya Nadella in the firm's Q4 2025 earnings announcement.

The regulatory body determined that competition within the UK cloud sector is "not working well," the CMA stated in its concluding determination. The watchdog specifically flagged Microsoft's approach to software licensing as "adversely impacting the competitiveness of AWS and Google in the supply of cloud services." To address these concerns, the CMA proposed "targeted and bespoke interventions" designed to restore fair competition.

Microsoft pushed back against the findings, reiterating objections it had previously submitted in February during the investigation process. "The CMA Panel's most recent publication misses the mark again, ignoring that the cloud market has never been so dynamic and competitive, with record investment, and rapid, AI-driven changes," the company stated. "Microsoft looks forward to working with the Digital Markets Unit toward an outcome that more accurately reflects the current competition in cloud."

Market Dominance and Global Expansion

Three major U.S.-based cloud operators collectively control roughly two-thirds of the worldwide infrastructure services market. AWS maintains the largest share at 29%, with Microsoft holding 22% and Google Cloud at 12%, based on data from Synergy Research Group's May analysis.

The concentration is even more pronounced across Europe, where these three firms account for 70% of the region's $70 billion cloud spending last year. Meanwhile, European-based competitors have lost ground significantly, with their combined market share dropping from 29% in 2017 to 15% in 2022, according to findings published by the analyst firm in July.

Capital Investment and Capacity Constraints

Explosive growth in cloud adoption, fueled by artificial intelligence implementations and ongoing shifts of computing workloads to the cloud, has triggered an unprecedented expansion phase among major cloud operators that continues unabated.

Microsoft allocated $80 billion toward capital expenditures during its 2025 fiscal year, with $24.2 billion spent in the final quarter alone, according to Executive Vice President and Chief Financial Officer Amy Hood. Within that quarterly figure, more than $17 billion went toward property, plants and equipment. The company projects capital spending will surpass $30 billion in the subsequent quarter as it works to address rising demand.

"Even as we continue bringing more datacenter capacity online, we currently expect to remain capacity constrained through the first half of our fiscal year," Hood explained. "We have $368 billion of contracted backlog we need to deliver, not just across Azure, but across the breadth of the Microsoft Cloud."

Azure's Role in Overall Revenue

Azure's robust expansion enabled the cloud segment to generate more than one-quarter of Microsoft's total $281 billion in revenue for fiscal 2025. The broader Intelligent Cloud division, which encompasses Azure alongside other offerings, produced $106 billion, representing over one-third of the company's overall revenue for the year.

Customer Adoption and AI Integration

Major enterprise customers have been instrumental in driving Azure's expansion. Nadella highlighted food and beverage multinational Nestlé as a significant example, noting the company decommissioned six legacy data centers by executing a comprehensive migration involving more than 200 SAP instances and over 10,000 servers.

Microsoft 365 Copilot, an artificial intelligence assistant integrated into the company's cloud-based productivity applications, has also accelerated cloud service consumption. The company introduced two additional AI agents designed for sales functions to the Copilot lineup in March and launched a consumption-based pricing option for Copilot at the start of the year.

"Customers continue to adopt Copilot at a faster rate than any other new Microsoft 365 suite," Nadella noted, citing financial services firm Barclays' commitment to deploy the tool across 100,000 employees following an initial rollout to 15,000 staff members.