Heroku is a back-end platform-as-a-service (PaaS) used for deploying, scaling, and managing server-side applications including APIs, web applications, background workers, and scheduled jobs. Heroku handles infrastructure provisioning, routing, and scaling automatically, abstracting away server management. While Heroku can host static frontend assets, its primary role is back-end application deployment with add-on integrations for databases, caching, and monitoring.
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