Global public cloud services market revenue totalled $233.4 billion in 2019, according to new data from IDC.
The market, which includes Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS), grew 26% year over year.
IDC's Worldwide Semiannual Public Cloud Services Tracker shows spending continued to consolidate in 2019 with the combined revenue of the top 5 public cloud service providers (Amazon Web Services, Microsoft, Salesforce.com, Google, and Oracle) capturing more than one third of the worldwide total and growing 35% year over year.
"Cloud is expanding far beyond niche eCommerce and online ad-sponsored searches. It underpins all the digital activities that individuals and enterprises depend upon as we navigate and move beyond the pandemic," says Rick Villars, group vice president, Worldwide Research at IDC.
"Enterprises talked about cloud journeys of up to ten years. Now they are looking to complete the shift in less than half that time."
The public cloud services market has more than doubled since 2016. During this same period, the combined spending on IaaS and PaaS has nearly tripled.
This highlights the increasing reliance on cloud infrastructure and platforms for application deployment for enterprise IT internal applications as well as SaaS and digital application delivery.
IDC expects spending on IaaS and PaaS to continue growing at a higher rate than the overall cloud market over the next several years as resilience, flexibility, and agility guide IT platform decisions.
Deepak Mohan, research director, Cloud Infrastructure Services, says, "Today's economic uncertainty draws fresh attention to the core benefits of IaaS – low financial commitment, flexibility to support business agility, and operational resilience.
"Cost optimisation and business resilience have emerged as top drivers of IT investment decisions and IaaS offerings are designed to enable both," he says.
"The COVID-19 disruption has accelerated cloud adoption with both traditional enterprise IT organisations and digital service providers increasing use of IaaS for their technology platforms."
Larry Carvalho, research director, Platform as a Service, says digitising processes is being prioritised by enterprises in every industry segment and that is accelerating the demand for new applications as well as repurposing existing applications.
"Modern application platforms powered by containers and the serverless approach are providing the necessary tools for developers in meeting these needs," he explains.
"The growth in PaaS revenue reflects the need by enterprises for tools to accelerate and automate the development lifecycle."
Frank Della Rosa, research director, SaaS and Cloud Software, adds, "SaaS applications remains the largest segment of public cloud spending with revenues of more than $122 billion in 2019.
"Although growth has slowed somewhat in recent years, the current crisis serves as an accelerator for SaaS adoption across primary and functional markets to address the exponential growth of remote workers," he says.