There are primarily three types of cloud platforms:
Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet. Examples include Amazon Web Services (AWS) and Microsoft Azure. Platform as a Service (PaaS): Offers hardware and software tools over the internet, typically for application development. Examples include Google App Engine and Heroku. Software as a Service (SaaS): Delivers software applications over the internet, on a subscription basis. Examples include Salesforce and Dropbox.