Amazon Web Services reported Q4 2025 revenue of $28.8 billion, a 24% year-on-year increase that exceeded analyst expectations. AWS operating income reached $10.6 billion, representing a 36.8% margin. CEO Andy Jassy attributed the growth to a "significant acceleration in AI workloads" as enterprises moved from experimental AI projects to production deployments.
AI Infrastructure Build-Out
Amazon committed $75 billion in capital expenditure for 2025, primarily for data centre construction. The company is building new facilities across Virginia, Oregon, Ohio, and internationally in Spain, Saudi Arabia, and Malaysia. AWS now operates 34 availability zones across 13 regions globally, with plans for 8 additional regions by 2027.
Amazon's in-house Trainium2 AI chips, designed by its Annapurna Labs subsidiary, have reached volume production. The chips offer an alternative to NVIDIA GPUs at lower cost, though benchmark performance remains behind the H100. AWS Bedrock, the company's managed AI service, now supports models from Anthropic (Claude), Meta (Llama), Mistral, and Amazon's own Titan models.
Competition and Market Share
AWS maintains approximately 31% of the global cloud infrastructure market, ahead of Microsoft Azure (25%) and Google Cloud (11%). However, Azure has grown faster, driven by its integration with OpenAI's models and Microsoft's enterprise relationships. Google Cloud has gained share through its Gemini AI capabilities and TPU custom chips.
The total cloud market was worth approximately $680 billion in 2025, according to Gartner, with AI-related services being the fastest-growing segment at 45% year-on-year growth.
Energy and Sustainability
Data centre energy consumption is a growing concern. AWS claims to be the world's largest corporate buyer of renewable energy, with over 500 solar and wind projects globally. However, the rapid expansion driven by AI has outpaced renewable procurement. Reports indicate that AWS is exploring small modular nuclear reactors (SMRs) and long-term power purchase agreements to secure reliable, low-carbon energy.
For AWS financial data, visit Amazon Investor Relations. For cloud market share data, see Synergy Research Group.