Public Cloud Provider Comparison: AWS, Azure, GCP, OCI, DigitalOcean & More

The global cloud infrastructure market reached approximately $395 billion in 2025, with AWS, Azure, and GCP controlling 63% of enterprise spending as of Q1 2026. AWS's market share narrowed from 30% to 28% year-over-year, while GCP surged 63% and OCI grew 44%, signaling intensifying competition driven by generative AI workloads.

The global cloud infrastructure services market reached approximately $395 billion in 2025 , representing a 17% year-over-year expansion and is projected to exceed $500 billion by mid-2026, driven primarily by generative AI workloads. 1,2 The competitive landscape remains dominated by three hyperscalers—Amazon Web Services AWS , Microsoft Azure, and Google Cloud Platform GCP —which collectively control approximately 63% of total enterprise cloud spending as of Q1 2026. However, the competitive dynamics are shifting: AWS’s market share has narrowed from about 30% to 28% year-over-year, while GCP surged 63% YoY and Oracle Cloud Infrastructure OCI grew 44%, signaling intensifying competition beyond the traditional top two.