Hybrid serverless would be a deployment model that links hybrid cloud to the serverless deployment model. It is already started by IT vendors offering hardware rental services in the form of private clouds, putting them to customer's organizations, and charging at the rate of pay-as-you-go.
When the serverless and FaaS computing platforms are deployed on top of that kind of hybrid infrastructure, they become hybrid serverless. This could be the next generation of computing platform that allows you to store sensitive data inside the organization, having some important FaaS functions running on the local system, while leveraging some extra computing resources as pay-per-request. It will be in the scope of the definition of serverless, if the customer's organization does not need to maintain or administer any of the hardware servers. Fortunately, when mixing this model with what we have discussed throughout this book, using Docker as our infrastructure would still be applied...