Types of available compute engines
https://cloud.google.com/compute/
pricing for custom machine types
https://cloud.google.com/compute/vm-instance-pricing#e2_custommachinetypepricing
on-demand vs spot instances
https://cloud.google.com/compute/docs/instances/spot
Types of storages overview
https://cloud.google.com/blog/topics/developers-practitioners/your-google-cloud-database-options-explained