Chances are you already use several SaaS products every single day and have simply never thought about the category they belong to. If you check email through a browser, use Zoom for calls, or manage anything through Google Sheets rather than a program installed on your computer, you have been using SaaS — you just never needed the label to use it.
This article explains what SaaS actually means, using a Netflix comparison that makes the underlying idea click immediately, real examples across categories you will recognise, and a clear picture of exactly how it differs from the way software used to work.
The Netflix Comparison
Think about how people watched movies before streaming existed. You would go to a shop, buy or rent a physical DVD, take it home, and play it on a DVD player you also had to own and maintain. If the disc got scratched, that was your problem. If a new, better version of the movie came out, you had to go buy it again.
Now think about Netflix. You pay a monthly subscription. You never own a physical copy of anything. The moment you stop paying, access stops. Netflix handles all the technical infrastructure — the servers, the storage, the delivery to your device — entirely behind the scenes. You just open the app and it works, from any device, anywhere you have internet.
SaaS — Software as a Service — works on essentially the same principle, applied to business software instead of movies. Instead of buying a copy of accounting software, installing it on your office computer, and maintaining it yourself, you pay a subscription to access accounting software that runs on the provider's servers, accessible from your browser, with the provider handling all the technical maintenance behind the scenes.
What SaaS Actually Stands For
Software — a computer program that does something useful, same as always.
as a Service — this is the part that actually defines the category. Rather than buying software as a one-time product you own and maintain, you access it as an ongoing service, paid for on a recurring basis, with the provider responsible for keeping it running.
How Software Used to Work, and Why That Changed
Before SaaS became the dominant model, buying business software typically meant purchasing a licence, installing the program on your own computer or server, and taking on responsibility for keeping it updated, backed up, and secure yourself. If you wanted to access it from a different computer, you often needed a separate licence installed there too. If the software needed an update, someone had to manually install it. If your computer's hard drive failed, your data was at genuine risk unless you had your own backup system.
SaaS changed this by moving the software itself onto the provider's own servers, accessed through your web browser rather than installed locally. This shift happened because internet connections became reliable and fast enough to make this practical, and because it solves real problems for both the provider and the customer — the provider can push updates to every customer simultaneously instead of shipping new installation files, and the customer no longer needs to personally manage servers, backups, or security patches for that piece of software.
Real Examples You Probably Already Use
Gmail and Google Workspace. Your email, documents, and spreadsheets, all accessed through a browser, with Google handling every bit of the underlying infrastructure, security, and maintenance.
Zoho Books or QuickBooks Online. Accounting software you access through a browser rather than installing on one specific computer, with your financial data stored securely on the provider's servers rather than only on your own hard drive.
Zoom. Video calling delivered as an ongoing service — you are not installing a full telecommunications system, you are accessing one that already exists and is maintained centrally.
Netflix itself, technically. While usually thought of as entertainment rather than "software," Netflix is structurally a SaaS product — a subscription service delivering software-based functionality through the internet, with all infrastructure handled centrally.
Traditional Software vs SaaS
| Traditional Installed Software | SaaS | |
|---|---|---|
| How you pay | One-time purchase, often per computer | Ongoing subscription |
| Where it runs | Your own computer or server | The provider's servers |
| How you access it | The specific device it is installed on | Any device with a browser and internet |
| Who handles updates | You, manually | The provider, automatically |
| Who handles backups and security | You | The provider, as part of the service |
| Upfront cost | Often higher | Typically low or none |
| What happens if you stop paying | You keep using the version you own | Access typically stops |
Why Businesses Choose SaaS
Lower upfront cost. Converting a large one-time purchase into a smaller recurring payment makes software more accessible, particularly for smaller businesses without significant capital to deploy at once.
No local maintenance burden. Security patches, backups, and updates are the provider's responsibility, not something your business needs its own technical staff to manage.
Access from anywhere. Since SaaS products run in the provider's infrastructure and are accessed through a browser, your team can use them from any location with internet access, not just one specific office computer.
Automatic improvement over time. When a SaaS provider improves their product, every customer gets the improvement automatically, without needing to purchase or install anything new.
Where SaaS Has Genuine Limits
Ongoing cost accumulates. A subscription that feels affordable monthly can add up to a substantial amount over several years, sometimes exceeding what a one-time purchase would have cost over the same period.
You depend on the provider staying in business and staying reliable. If a SaaS provider shuts down, gets acquired and changes direction, or experiences extended downtime, your access to a tool your business depends on is affected in ways a locally installed program is not.
Your data lives on someone else's infrastructure. For most businesses this is a manageable trade-off, but for specific regulatory or data control requirements, it is a real consideration worth evaluating explicitly.
Standard products are built for the average customer, not your specific workflow. SaaS products are designed to serve many customers with one shared system, which sometimes means your specific, unusual requirements do not fit cleanly — this is where the case for custom software sometimes becomes relevant instead of, or alongside, SaaS.
Common Questions
Is SaaS the same thing as "the cloud"? Related but not identical. "The cloud" broadly refers to computing infrastructure and storage accessed over the internet rather than owned locally. SaaS is a specific category of cloud-delivered product — a complete, ready-to-use software application delivered as a service. Cloud computing is the broader infrastructure category that makes SaaS possible.
Do I need technical staff to use SaaS products? Generally no — that is one of the main appeals. Most SaaS products are designed for non-technical users to set up and use directly through a straightforward interface, without needing in-house technical expertise to install or maintain anything.
What happens to my data if I stop paying for a SaaS subscription? This varies by provider, and it is worth checking explicitly before committing to any SaaS product. Reputable providers typically give you a window to export your data before deleting it, but policies differ, and this is a genuine question worth asking directly rather than assuming.
Is SaaS always cheaper than buying software outright? Not necessarily over a long enough period — this depends entirely on your specific usage and how many years you plan to use it. Our detailed cost comparison walks through how to calculate this properly for your situation rather than assuming either option is automatically cheaper.
Can a SaaS product be customised for our specific business? To some degree, most SaaS products offer configuration options — but there is a meaningful difference between configuring an existing product within its built-in options and genuinely customising how it fundamentally works. If your requirements go beyond what configuration can achieve, that is usually the signal to evaluate a custom-built alternative.
Key Takeaways
SaaS means accessing software as an ongoing subscription service, delivered through your browser from the provider's own servers, rather than buying a copy to install and maintain yourself — the same underlying shift that took movies from DVDs to Netflix.
You almost certainly already use several SaaS products daily without having needed the label to use them effectively — Gmail, Zoom, and browser-based accounting tools are all common examples.
SaaS genuinely lowers upfront cost and removes the local maintenance burden, but it comes with real trade-offs — accumulating subscription cost over time, dependency on the provider, and limits on how deeply the product can be customised to your specific workflow.
If you're trying to work out whether a SaaS product genuinely fits your business, or whether your requirements have outgrown what a standard subscription product can offer, talk to us. We'll give you an honest read either way.