SaaS

Software as a Service is a delivery model where applications are hosted in the cloud and accessed through web browsers on a subscription basis. SaaS eliminates the need for local installation, providing automatic updates, scalability, and accessible pricing. Users pay monthly or annually rather than purchasing a perpetual license, which lowers the barrier to adoption and spreads costs over time.

From a web development perspective, SaaS products are web applications at their core, which means every aspect of frontend and backend engineering applies directly. Building a successful SaaS product requires handling multi-tenancy, subscription billing through services like Stripe, user authentication with role-based access, and infrastructure that scales with the customer base. The subscription revenue model generates predictable recurring revenue, and metrics like MRR, churn rate, and LTV are used to evaluate business health. SaaS has become the dominant software delivery model for business tools, from project management and CRM to analytics and design.