One of the traditional impediments to businesses adopting public cloud computing is the concern over putting all your eggs in one basket. This is where Hybrid Cloud steps in.
The Hybrid Cloud is a description of utilizing a preexisting on-premises datacenter and a cloud solution such as Microsoft Azure to balance the overall solution. Hybrid Cloud requires the need for a constant reliable connection to your datacenter.
Building a Hybrid Cloud and having a customer put this over the shared Public internet connection gives you no SLA or reliability.