According to IDC's forecast, total spending on cloud IT infrastructure (servers, storage, and Ethernet switches excluding double counting servers and storage) will grow 24.1% in 2015 to $32.6 billion versus 27.9% in 2014, representing a third of all end-user spending on corporate IT infrastructure.

In comparison, spending on IT infrastructure implemented under the traditional (non-cloud) model will decrease by 1.6% compared to last year, although it will amount to $66.8 billion, remaining the largest segment of the market. Spending on IT infrastructure deployed in a private cloud environment will grow 15.8% year-over-year to $12.1 billion, while spending on IT infrastructure in the public cloud will increase 29.6% to $20.5 billion in 2015.

 IDC expects that spending on cloud IT infrastructure in 2015 will grow in all regions except for Central and Eastern Europe, where stability has been disrupted by political and economic problems that harm IT spending. All three categories—servers, storage, and Ethernet switches—will experience growth of over 20%, with server spending posting the highest growth rate of 25.5%.

Over a five-year forecast period, IDC expects cloud IT infrastructure spending to grow at a compound annual growth rate (CAGR) of 15.1% to $53.1 billion by 2019, representing 46% of total IT spending for corporate IT infrastructure. At the same time, the cost of traditional (non-cloud) IT infrastructure will decrease by 1.7% (CAGR) annually. Spending on IT infrastructure in the public cloud will grow faster than IT infrastructure in the private cloud, at 16.3% and 13.2% (CAGR), respectively. In 2019, IDC expects service providers to spend $33.6 billion on IT infrastructure to deliver public cloud services, while spending on private cloud IT infrastructure will reach $19.4 billion.

«Various IDC research shows a growing interest of enterprise customers in cloud adoption in many IT segments,»writes Natalia Ezhkova, director of research at Storage Systems. «Final users often point to the flexibility of [cloud] IT infrastructure and economics as incentives to adopt the cloud, but we also expect the growth of next-generation applications 'born' and running in the cloud to drive its continued growth.»
BasedonmaterialsfromPCWeek(pcweek.ua)