The global market for public cloud services, including Infrastructure as a Service (IaaS), System Infrastructure Software as a Service (SISaaS), Platform as a Service (PaaS), and Software as a Service (SaaS), grew 24.1% YoY in 2020 revenues totaling $ 312 billion, according to International Data Corporation’s (IDC) global semi-annual public cloud services tracker.

Spending continued to consolidate in 2020. The combined revenues of the top five public cloud service providers (Amazon Web Services, Microsoft,, Google, and Oracle) represented 38% of total global spend and grew 32% year over year. With a growing portfolio of SaaS and SISaaS offerings, Microsoft now shares the top position with Amazon Web Services in the overall public cloud services market, with both companies holding a 12.8% revenue share for the year.

“Access to shared infrastructure, data and application resources in public clouds has played a critical role in helping organizations …

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