Types of Public Cloud Servers
Ready-to-use web-based applications with no setup or installation required – normally just a credit card! No access is available to the infrastructure or data at the back-end other than possibly through an API. Most organisations use Google Apps, Office 365, and a multitude of small web-based applications.
Refers to cloud-based platform services that applications and data can be added on to. Examples include Azure SQL, Azure AI Platform, Google App Engine or Force.com.
The most similar to Private Cloud in that you can run your own servers and have full access at the operating system layer, without having manage hardware, storage or backups. Microsoft Azure and Amazon Web Services (AWS) are the biggest providers at this layer.