What is SaaS?
Understand the definition, business model, and technical architecture of SaaS, and how to rapidly build modern SaaS products
Published: July 1, 2025
1. Definition of SaaS
SaaS (Software as a Service) is a revolutionary cloud computing service model that allows users to access and utilize software applications over the internet without the need for local installation or maintenance. This paradigm has fundamentally transformed how traditional software is delivered, consumed, and managed in the modern digital landscape.
Core Characteristics
- On-demand Access：Users can access software anytime, anywhere via the internet
- Subscription-based：Typically uses monthly or annual subscription models
- Multi-tenant Architecture：Multiple users share the same software instance
2. SaaS Business Model
Revenue Models
- Subscription Fees：Monthly or annual subscriptions
- Usage-based Billing：Charge based on actual usage
- Value-added Services：Premium features and support
Key Advantages
- Low Initial Cost：No large upfront investment required
- Rapid Deployment：Ready to use, quick to deploy
- Automatic Updates：Continuous feature improvements and security updates
3. SaaS Technical Architecture
Modern SaaS applications leverage cloud-native architectures designed for high availability, horizontal scalability, and enterprise-grade security. These applications are built using cutting-edge technology stacks that enable rapid development, seamless deployment, and efficient maintenance. Here are the key components of a typical SaaS technology stack:
Frontend Technologies
Backend Technologies
Experience Get SaaS Pro
Get SaaS Pro is a modern SaaS template designed for global products. We provide complete user authentication, payment systems, multi-language support and other features to help you quickly build and deploy SaaS products.