What is OpenStack and its importance in today's computing?

OpenStack is open source hardware base software tool to manage cloude services.

OpenStack is a set of software tools for building and managing cloud computing platforms for public and private clouds. 

To reduce the cost of the physical machine(Hardware cost).

 OpenStack is. "This means it has a vibrant ecosystem, and it has a product that itself is robust enough for enterprise applications and very, very large service provider installments."

OpenStack is mainly a hardware as a service solution.

It's a great tool for cloud computing and most importantly it's open source.

Please find more information on:

http://www.openstack.org/

https://www.redhat.com/en/insights/openstack