Using hard disk space to temporarily store data or instructions from ram is referred to as the

*nix - swap partition
All OS's - swap file[s]
Windows - page file

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

Just trying to get some points : p sorry bro