What is SaaS?
Software as a Service. You pay a subscription instead of buying the software outright. Like Spotify, but for almost everything.
SaaS stands for Software as a Service. Instead of buying a program once and installing it on your computer, you pay an ongoing subscription to use it via the web. The software lives on the provider's servers (in the cloud) and you access it through your browser, wherever you are.
Think of Spotify. You do not own the songs and you do not have a huge CD shelf at home — you pay a monthly fee and get access to everything, always up to date. SaaS works the same way but for software: accounting, email, project tools, CRM, and most other things exist as SaaS today. You skip installations, updates, and hassle — the provider handles everything behind the scenes.
This model has transformed the entire software world. In the past you bought a licence in a box; today you rent access and pay per month or year for as long as you use the service.
Why is SaaS important for your business?
SaaS lets you get started quickly at a predictable monthly cost, without large investments in your own servers or IT operations. You pay for what you use and can often scale up or down as needs change. Updates, security, and backup are handled by the provider, which saves time for you and your staff.
If you build a service that other businesses pay a subscription for, you are also a SaaS business — a model with recurring revenue that investors like and that is easier to plan around.
SaaS in practice
A typical small business already uses several SaaS tools without thinking about it: perhaps accounting software, Microsoft 365 for email and documents, a booking system for customers, and a CRM to track contacts. Everything is paid monthly and accessed directly in the browser.
If you have an idea for a tool that solves a recurring problem for an industry, you can build it as a SaaS service. Customers log in, pay monthly, and you avoid selling the same thing over and over. It is one of the most sustainable models for digital products today.
Common questions about SaaS
What does SaaS mean?
SaaS means Software as a Service. Instead of buying a program once, you pay a subscription to use it via the web — like Spotify, but for software.
What is the difference between SaaS and traditional software?
Traditional software you buy and install yourself, while SaaS runs in the cloud and is accessed via the browser for an ongoing fee. With SaaS you skip installations and updates — the provider handles operations for you.
Is SaaS secure?
Reputable SaaS providers often invest more in security, backup, and updates than a single business can manage alone. At the same time, you store your data with someone else, so it is wise to check where data is stored and that GDPR is followed.
Related terms
ARR
Annual Recurring Revenue. How much recurring money your SaaS brings in per year. Investors love this number.
CAC
Customer Acquisition Cost — what you spend to win one new customer. LTV should be at least 3× CAC. Otherwise you are buying growth at a loss.
Churn
The rate at which customers leave. High churn means holes in the bucket — plug the leaks before pouring in more customers.
MRR
Monthly Recurring Revenue. ARR's little sibling — the monthly version. Easier to spot short-term trends.
CRM
Customer Relationship Management — a system for tracking customers without drowning in spreadsheets. Your business memory, but better organised.
Freemium
Free basic tier plus paid premium. Works when the free version is valuable enough to use — but not enough to stop people upgrading.