Heroku is a cloud platform as a service (PaaS) that simplifies the deployment, management, and scaling of applications. Initially launched in 2007, it supports multiple programming languages, including Ruby, Python, Java, and PHP, making it a versatile choice for developers. Heroku utilizes container-based architecture, where applications run in isolated environments called “dynos.” This allows for easy scaling and management of resources. With both free and paid tiers, Heroku caters to a wide range of users, from hobbyists to large enterprises, providing an elegant and user-friendly interface for deploying modern applications efficiently.