Video: More enterprise are going all-in with select cloud providers

Spending on public cloud computing services[1] will grow by nearly a quarter this year, but more of that spending is going to a small number of vendors.

Worldwide spending on public cloud services will grow 21.4 percent this year to $186.4bn, up from $153.5bn in 2017, according to analyst firm Gartner[2].

Gartner said the fastest-growing segment of the market is cloud infrastructure as a service (IaaS), which it forecasts to grow 35.9 percent in 2018 to reach $40.8bn. The analyst firm said it expects the top 10 providers to account for nearly 70 percent of the IaaS market by 2021, up from 50 percent in 2016.

gartner-cloud-april-2018.png Image: Gartner

These rise of these so-called 'hyperscale' IaaS providers, like Amazon Web Services (AWS), Google, and Microsoft creates "enormous opportunities and challenges" for customer and other vendors, said Sid Nag, research director at Gartner.

See also: Cloud migration decision tool[3]

"While it enables efficiencies and cost benefits, organisations need to be cautious about IaaS providers potentially gaining unchecked influence over customers and the market," he said.

One opportunity of going all-in with one big cloud provider is that can be easier and (at least initially) cheaper to pick just one vendor (as ZDNet's Larry Dignan points out[4], this is the same model that many CIOs chose during the era of big enterprise software deployments).

Beware lock-in

But one challenge that could be looming is the issue of cloud lock-in: once companies have moved their applications and data onto one cloud platform, it's complicated and expensive for them to move away again.

Gartner said this will lead customers to demand easier

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