Modified 2 August 2026

AI glossary

SaaS

Software as a Service — ready-made software you use in a browser or app, without installing or operating anything. You pay monthly or annual subscriptions. ChatGPT, Notion, Slack, and Spotify are SaaS. Fastest to start, but you own neither the data nor the infrastructure.

Related terms

• PaaS
• IaaS
• SaaP