1. Deployment flexibility: Clever Cloud provides a variety of deployment options, allowing developers to choose from multiple deployment methods such as Git push, command-line interface, or plugins for popular frameworks. Flynn also offers flexible deployment methods, including CLI tools and APIs, catering to developers' preferences. In contrast, Heroku mainly focuses on deploying applications through Git push or Heroku CLI, limiting the flexibility compared to Clever Cloud and Flynn.
2. Scalability options: Clever Cloud stands out with its seamless auto-scaling capabilities, allowing applications to dynamically adapt to varying traffic loads. Flynn offers manual scaling options, enabling users to control the number of instances based on their needs. On the other hand, Heroku provides automatic vertical scaling but limited horizontal scaling options, making it less customizable in terms of scalability compared to Clever Cloud and Flynn.
3. Pricing structures: Clever Cloud offers a unique pricing model based on resources used (CPU, RAM, etc.) with pay-as-you-go flexibility, ensuring cost-effectiveness and transparency for users. Flynn's pricing is based on nodes and services usage, providing a granular approach to cost management. In contrast, Heroku implements a more traditional pricing model based on dyno types and resources, which might be less budget-friendly for certain applications compared to Clever Cloud and Flynn.
4. Docker support : Clever Cloud and Heroku offer native support for Docker containers, enabling developers to easily deploy containerized applications on the platforms. In contrast, Flynn is designed as a platform utilizing containers at its core, allowing seamless integration and management of Docker containers for application deployment. This difference highlights Flynn's stronger emphasis on containerization compared to Clever Cloud and Heroku.
5. Language support and integrations: Clever Cloud provides support for a wide range of programming languages and frameworks, ensuring compatibility with diverse development environments. Flynn offers extensive language support and integrations through its plugin system, enabling developers to easily extend the platform's functionality. While Heroku also supports multiple programming languages, its ecosystem might be more limited compared to Clever Cloud and Flynn in terms of integrations and customization options.
6. Infrastructure control: Clever Cloud offers a high level of control over the underlying infrastructure, allowing users to customize runtime environments and resources to meet specific application requirements. Flynn provides similar control by enabling users to manage cluster nodes and services for increased flexibility. In contrast, Heroku abstracts much of the infrastructure management, offering a more simplified approach that might be less suitable for applications with complex infrastructure needs.

In Summary, Clever Cloud, Flynn, and Heroku differ in deployment flexibility, scalability options, pricing structures, Docker support, language support, and infrastructure control, catering to diverse development needs and preferences.