We will first look at the different cloud models and their characteristics. The most common cloud model is the public cloud, so let's start with that:
- Public Cloud: This is the most common model, where the CSP provides cloud services for multiple tenants. This is like being one of many people who rent an apartment in an apartment block:
Figure 1: Public cloud
Just like in the public cloud, none of the tenants owns their apartment. For example, a small company does not want to invest $50,000 in IT systems, so they purchase their cloud package from a cloud provider where they and another company are hosted by the cloud provider. This is similar to someone renting one apartment in a block from a landlord - you lease but do not own the flat. This is a multitenant environment where the cloud provider has multiple companies on the...