1. Pricing Model: Azure App Service charges based on the resources used, while Hasura has a free tier with the option to pay for additional features and support based on requirements.
2. Database Integration: Azure App Service supports a wide range of databases, while Hasura integrates well with PostgreSQL and offers auto-generating APIs for rapid application development.
3. Deployment Options: Azure App Service provides various deployment options like FTP, Git, and CI/CD, whereas Hasura leverages Docker containers for deployment and can be deployed on any cloud platform.
4. Scalability: Azure App Service offers automatic scaling based on resource usage, while Hasura allows for horizontal scaling by adding more instances to handle increased traffic.
5. Security Features: Azure App Service provides built-in security features like Azure Active Directory integration, whereas Hasura offers role-based access controls and JWT authentication out of the box.
6. Customization: Azure App Service allows for more customization through the use of extensions and plugins, while Hasura provides a more opinionated approach focused on GraphQL APIs.

In Summary, the key differences between Azure App Service and Hasura lie in their pricing models, database integration, deployment options, scalability, security features, and customization capabilities.