Virtual data centers are machines created with software based on computing, memory, and storage. These operations are given to multiple smaller units, which run individually and then connect together to compile the information. Imagine having a thousands of computers connected together with sole purpose of storing online data. Expect, the physical hardware is absent and these machines are computer programs running 24×7 hour, 7 days a week.
When virtual machines are used to store data for computing, they become a “cloud.”
Let’s give you real-life examples of clouds that millions of online users activate every day. Services like Dropbox and Apple’s iCloud are classic examples of successful cloud applications. User can store photos, mails, records, and any information as form of data in the virtual machines and access this data from any part of the world.