1. Infrastructure: DigitalOcean provides virtual machines known as "Droplets", giving users full control over their infrastructure. Users can configure and manage their own operating systems and applications. On the other hand, Heroku is a higher-level platform that abstracts away much of the infrastructure management, making it easier for developers to deploy and scale their applications without worrying about server management.

2. Pricing Model: DigitalOcean offers a straightforward pricing model based on the resources consumed by the Droplets, such as CPU, RAM, and storage. Users are billed hourly for the resources they use. In contrast, Heroku follows a more complex pricing model that takes into account factors like dyno hours, add-ons, and database usage, which can make it harder to estimate costs accurately.

3. Deployment Process: With DigitalOcean, users need to manually set up their own servers, configure their environments, and deploy their applications. This provides more flexibility and control but requires more technical knowledge. Heroku simplifies the deployment process by providing a Git-based workflow. Users can simply push their code changes to the Heroku remote repository, and Heroku takes care of building, deploying, and managing the application.

4. Scalability: DigitalOcean allows users to scale their applications vertically by upgrading the resources of their Droplets or horizontally by adding more Droplets. Users have full control over the scaling process. Heroku, on the other hand, is designed to handle scaling automatically. The platform can scale the application horizontally by adding more dynos based on the workload, making it easier to handle traffic spikes without manual intervention.

5. Integration and Add-Ons: DigitalOcean provides a wide range of pre-configured operating systems and applications that can be quickly deployed on Droplets. However, it has limited integrations and add-ons compared to Heroku. Heroku offers a marketplace of add-ons that can be easily integrated into applications, providing additional functionalities such as data services, monitoring, logging, and more.

6. Community and Support: Both DigitalOcean and Heroku have active developer communities and provide documentation and support resources. However, DigitalOcean has a vast library of community tutorials and resources that cover a wide range of topics, making it a valuable knowledge base for developers. Heroku, being a more specialized platform, also offers extensive documentation and support, specifically tailored to its platform and features.

In summary, DigitalOcean provides more control and customization over infrastructure, follows a straightforward pricing model, requires more technical management, and offers a broader range of community resources. On the other hand, Heroku abstracts away much of the infrastructure management, simplifies the deployment process, handles scaling automatically, offers a wide range of integrations and add-ons, and provides platform-specific documentation and support.