What is SaaS? Software as a Service Explained Simply
SaaS in Plain English
SaaS stands for Software as a Service.
Instead of buying software once and installing it on your computer (like Microsoft Office in the old days), you pay a monthly or yearly subscription to access it through the internet.
Old way: Buy software CD → Install → Own forever (but no updates)
SaaS way: Sign up → Use in browser → Pay monthly → Always updated
Examples You Already Know
- Netflix — Watch movies/shows for $15/month
- Spotify — Listen to music for $10/month
- Google Workspace — Email, docs, storage for $6/user/month
- Slack — Team chat for $7/user/month
- Canva — Design tools for $13/month
- Notion — Notes and wikis for $8/user/month
All of these are SaaS products. You access them through the web, pay regularly, and don't need to install anything.
Why SaaS is a Great Business
SaaS is loved by founders and investors because of recurring revenue:
- Predictable income — You know roughly what you'll earn next month
- Customers compound — New customers add to existing ones
- Lower costs — No physical products to ship
- Global reach — Anyone with internet can be a customer
- Continuous improvement — You can update the product anytime
SaaS vs Other Business Models
| Model | How You Earn | Example |
|---|---|---|
| SaaS | Monthly subscription | Notion, Slack |
| One-time purchase | Single payment | Video games |
| Marketplace | Commission on sales | Etsy, Airbnb |
| Advertising | Ads revenue | Facebook, Google |
| Consulting | Hourly/project fees | Agencies |
SaaS is often considered the best model because revenue is predictable and compounds over time.
Key Takeaways
- SaaS = software you access online and pay for monthly
- You're probably already using 5-10 SaaS products
- Recurring revenue makes it an attractive business model
- No coding required to understand or even build SaaS today