Cloud Foundations

On-demand self-service, multi-tenancy and resource pooling, rapid elasticity and scalability, and measured services are the widely known cloud attributes in cloud computing.

Public, private, community, and hybrid are the four managed cloud services, and Platform-as-a-Service, Software-as-a-Service, and Infrastructure-as-a-Service are the three known deployment models in cloud computing.

Pay-as-Use, Subscription-based, Hybrid pricing models are the three scaling models, but every cloud computing provider classifies the pricing models differently. Scaling adds or removes compute, storage, and network services to accomplish workload demands for resources to maintain availability and performance as utilization increases.

This section compares containers with VM virtualization, and container VM with metal VM. It also explains PaaS overview and cloud service taxonomy.