Amazon Web Services (AWS) is one of the most widely adopted and comprehensive cloud platforms in the world, offering more than 200 full data center services.
Microsoft Azure, often referred to as Azure, is a cloud computing service operated by Microsoft for managing applications through Microsoft-managed data centers.
DigitalOcean is a cloud infrastructure provider with data centers around the world, providing developers with cloud services that help them deploy and scale applications that run concurrently on multiple computers.
The Google Cloud Platform, offered by Google, is a set of cloud computing services that run on the same infrastructure that Google uses internally for its end-user products such as Google Search, Gmail, Google Drive and YouTube.
Heroku is one of the first cloud platforms as a service that supports a variety of programming languages.