The FaaS ( Function as a Service ) model consists of a simplified way of developing code and packaging/delivering it that is extremely trivial for the developer. The way in which the computing resources will be provisioned to execute this code, when requested, is completely abstract to the developer.
In FaaS ( Function as a Service), the work is done by cloud czech republic mobile mobile database who instantiate resources where and when they are needed, releasing them when they are no longer needed. The servers that run the developed code are ephemeral (disposable) and the technology used for their packaging, distribution and provisioning is typically proprietary.
The interesting thing about the FaaS model is that it allows for billing models based on the consumption of computing resources. In this way, a function is only charged when it is triggered. Therefore, since functions are inherently elastic, these resources will be provisioned on a larger scale at times of peak consumption.