Introduction to the Cloud:Module 1: Overview of Cloud Computing:A Brief History and Evolution of Cloud

Virtual Machines (VMs)

In 2000 A hypervisor also separates the VMs logically, assigning each its own slice of underlying computing power, memory, and storage, thus preventing the virtual machines from interfering with each other

The Pay-as-you-go or computer utility model also evolved in 2000

Was a key driver for cloud computing success Used as a utility billing method -customers pay for services as they are procured and/or used.

Concept of cloud computing evolves.

1950's

Multiple users were able to access the same data storage layer and Central Processing Unit (CPU) power from any terminal.

1950's

The practice of time sharing or resource pooling evolved to make more efficient use of computing power via the mainframe.

1950's

The release of an operating system called Virtual Machine (VM) made it possible for mainframes to have multiple virtual systems or VMs on a single physical node.

1970's

Virtualization became a technology driver and a huge catalyst for the largest evolutions in communications and computing.

1970's

As the internet became more accessible and the need to make hardware costs more important, servers were virtualized into shared hosting environments, virtual private servers, and virtual dedicated servers, using the same types of functionality provided by the virtual machine operating system.

2000

For example, if a company needed "x" number of physical systems to run their applications, they could take one physical node and split it into multiple virtual systems. This was enabled by hypervisors.

2000

Hypervisor -small software layer that enables multiple operating systems to run alongside each other, sharing the same physical computing resources.

2000

Physical hardware was still quite expensive.

2000