In short, the cloud is not a replacement for your mainframe. It's just a newer, flashier way of implementing the same types of functionality that mainframes offered starting decades ago.

Will mainframe be replaced?

“We like to say that the mainframe, legacy, or back-office applications hold an accumulation of 30 to 40 years of business process and regulatory compliance evolution that is near impossible to replace,” said Lenley Hensarling, who is the chief strategy officer at Aerospike.

Is cloud the same as mainframe?

Mainframe is a client/server-based computer system. It has high processing power, memory, and storage to support massive data processing operations. Cloud computing is a distributed architecture of systems spread across Internet / web and used to store , manage, process and access data online.