Azure App Service vs Cloud Foundry: What are the differences?
What is Azure App Service? Build, deploy, and scale web apps on a fully managed platform. Quickly build, deploy, and scale web apps created with popular frameworks .NET, .NET Core, Node.js, Java, PHP, Ruby, or Python, in containers or running on any operating system. Meet rigorous, enterprise-grade performance, security, and compliance requirements by using the fully managed platform for your operational and monitoring tasks.
What is Cloud Foundry? Deploy and scale applications in seconds on your choice of private or public cloud. Cloud Foundry is an open platform as a service (PaaS) that provides a choice of clouds, developer frameworks, and application services. Cloud Foundry makes it faster and easier to build, test, deploy, and scale applications.
Azure App Service and Cloud Foundry can be primarily classified as "Platform as a Service" tools.
Cloud Foundry is an open source tool with 605 GitHub stars and 532 GitHub forks. Here's a link to Cloud Foundry's open source repository on GitHub.