Heroku is a platform-as-a-service (PaaS) provider that simplifies application deployment by abstracting away the complexity of managing servers. Its key strength is in enabling developers to focus on building applications without needing to handle infrastructure concerns such as server configuration or scaling. Heroku is especially useful for web applications that are written in languages like Ruby, Node.js, Python, and PHP.
Heroku is well-known for its ease of use, automatic scaling, and straightforward deployment process. However, this simplicity comes at a higher cost compared to IaaS services like DigitalOcean, making it best suited for developers who want to streamline application deployment rather than deal with detailed infrastructure management.