What is PaaS (Platform as a Service)?

What Is PaaS?

PaaS (Platform as a Service) is a cloud model that provides much of the server, operating system, runtime, scaling, and deployment infrastructure needed to run application code. Developers usually focus on code, configuration, and the data layer.

Tasks such as provisioning virtual machines, patching packages, or configuring load balancers move to the provider. Heroku, Google App Engine, Azure App Service, Render, Railway, and Cloud Foundry are examples of the PaaS approach.

What PaaS Includes

• Application runtime and build/deploy pipeline
• Environment variables and secret management
• Autoscaling or instance management
• Log collection and basic monitoring
• Add-on services such as databases, cache, or queues
• SSL, custom domains, and health checks

Compared with IaaS, PaaS provides less infrastructure control but faster product delivery. SaaS is a ready application for end users; PaaS is a platform for developers to run applications.

Business Use

PaaS works well for MVPs, internal tools, API services, admin panels, and SaaS products with straightforward traffic patterns. For small teams, it can reduce the time spent on infrastructure operations.

Important tradeoffs include vendor lock-in, pricing as traffic grows, background job support, region availability, database backups, and private networking needs. Projects with strict regulation or specialized performance requirements may need a more controlled infrastructure model.