According to National Institutes for Standards in Technology (NIST):
(Hybrid) cloud infrastructure is a composition of two or more distinct cloud infrastructures (private, community, or public) that remain unique entities, but are bound together by standardized or proprietary technology that enables data and application portability.
In simple terms, Hybrid cloud is a cloud computing environment that uses a combination of on- premises and third-party public cloud services.
Hybrid cloud gives a business greater flexibility and more data deployment options by allowing workload to move between private and public clouds as computing needs and cost change.
There are 2 main benefits of Hybrid Cloud:
Flexibility and Scalability
Cost Savings
A hybrid cloud not only allow companies to scale computing resources, it also eliminates the need to make massive capital expenditures to handle short term spikes in demand as well as when business needs to free up local resources for more sensitive data or applications.
The Hybrid Cloud Can Be a Win-Win Solution – Any solution that enables an organisation to respond in a flexible manner to IT demands is a win. Avoiding big upfront capital expenses for in-house IT infrastructure and to be able to quickly spin up IT resources as they’re needed will appeal to lot of organisations.