In simple words, cloud computing is delivery of resource, IT environments that enable on-demand services like computing, storage, networking, which can be accessed over the Internet using a cloud provider.

Advantages of Cloud Computing

• Agility
  Being able to implement technology services in a short time, being able to expand activities to new geographic regions.

• Elasticity
  You provision the amount of resources actually needed, being able to increase or decrease the amount of resources that will be needed.

• Cost savings
  Expenses are equivalent only to the IT consumed

Types of Cloud Computing

1. (IaaS) = infrastructure as a service
   Instead of physically purchasing and managing servers, companies can rent these resources from a cloud provider such as: Virtual Servers, Operating Systems, Storage

2. (PaaS)= plataform as a service
   Deliver development environments so that developers can create and manage applications. PaaS allows companies to focus on software development while the cloud provider manages the infrastructure. ex: azure, aws, heroku

3. (SaaS)= software as a service
   software distribution where applications are hosted by a service provider and made available over the internet, and can be accessed via the web such as: netflix, google drive, dropbox