The private versus public versus hybrid cloud debate continues to rage on. It’s all about which model can be most cost-effective for whatever enterprise applications need managing. Some have crunched the numbers – read more from analyst firm 451 Research1 – and have determined that private clouds cost less than public but only if at a large enough scale.
The rule of thumb was if labor efficiency was less than 400 VMs per engineer then a proprietary private cloud solution was ideal. If larger, then the open source cloud OS, OpenStack, becomes a more viable financial option. However, regardless of buying path, pricing is not the only factor to weigh and need to consider other risks such as salaries, proper staffing and the consequence of vendor lock-in.
Conversely, it’s hard to argue with the advantages of public cloud which are simple: enterprises are not required to worry about investing in infrastructure and whether to many or too little resources are provisioned to get whatever workloads completed.