Many companies are reaching the same point. The current process works, but it is increasingly clear that Excel, e-mails and several separate tools are no longer sufficient. Then a question arises that sounds simple, but in practice determines the budget, pace of operations and flexibility of the company for years: is it better to buy a ready-made SaaS or build a dedicated web application?
Check out how we design websites and applications
What does SaaS and what does a dedicated solution really mean?
SaaS is not simply a program on the Internet. According to NIST, this is a model in which you use a vendor's application running on its infrastructure, usually through a browser or API. Microsoft adds that SaaS is a business model and multitenancy is an architectural model - a SaaS product is usually shared by many customers, even if from the outside it looks like a separate system for each company.
This difference has business implications. A ready-made SaaS almost always starts faster because you are not building the product from scratch. You have ready-made login, panels, roles, and often basic integrations and manufacturer support. That's why SaaS makes sense where the process is fairly standard - for invoicing, simple CRM, appointment scheduling, or a helpdesk if your company doesn't need custom logic.
When SaaS makes more sense
In such a scenario, the key is quick launch, not the uniqueness of the solution. This is a practical conclusion due to the nature of SaaS and the fact that custom software projects go through a full cycle of discovery, design, development, QA and implementation. Clutch data shows that the typical timeline for a dedicated project is around 13 months - your own implementation is not a momentary decision.
ℹ️When SaaS wins
SaaS is a reasonable choice when the process is standard, the company wants to get off the ground quickly, and the competitive advantage does not come from the way it is operated. given area. Speed of launch and lower cost of entry are real advantages.
When a dedicated application gives a greater return
The problem begins when a company tries to squeeze a non-standard process into a standard tool. At first it seems like there's a way around it. Then there are further integrations, manual additions, CSV imports, additional logins and exceptions to the rules. The team is doing more and more work around the system instead of in the system.
This is where dedicated web application starts to make sense. Not because it is more prestigious, but because it reproduces the process as it really works.
Three situations are particularly important:
- The process is a competitive advantage - the company wins with the speed of quotation, handling of non-standard orders, its own customer onboarding or unique reporting.
- The system must combine many data sources - ERP, CRM, payments, files, order statuses, IoT devices, external API.
- The importance of permissions, data isolation and auditing is increasing - OWASP notes that in multi-tenant environments the main risks are leaks between tenants, false isolation and the "noisy neighbor" problem. Microsoft similarly points out the need to map requests to tenants and design isolation from the beginning.
Where companies most often miscalculate profitability
The most common mistake when making this decision is to look only at the entry price. The company asks whether a subscription of PLN 500 or 1,500 per month is cheaper than an implementation costing several dozen or several hundred thousand. This is too narrow a question.
It is better to calculate the total cost of the process:
- ✓How much time do people waste bypassing system limitations?
- ✓How much do data errors and lack of automation cost?
- ✓How much does the lack of customer self-service space cost?
- ✓How much does lack of flexibility cost when a company changes its operating model?
- ✓Does the design remove manual work and streamline a critical process?
⚠️Shared responsibility in the cloud
Microsoft reminds that even in SaaS, the client is responsible for the issues of configuration, data classification and matching security to real ones process requirements. Transferring infrastructure to a supplier does not mean transferring all responsibility.
A hybrid model that often wins
For many companies, the best solution is not a zero-to-one model, but a hybrid one. You buy SaaS where the process is a commodity, and you build your own module where you want an advantage.
Example: a service company can use a ready-made mailing and accounting system, but have its own customer panel, its own offer configurator and its own reporting logic. This arrangement shortens the start-up and at the same time allows you to develop those areas that really affect the margin, loyalty and scalability.
It is also worth considering process automation - it is often what allows you to avoid "all or nothing" decisions and gradually replace manual work where it hurts the most.
Decision table
| Model | ✓ Advantage | ✗ Limitation |
|---|---|---|
| SaaS ready | Low entry cost, quick start, ready-made roles and integrations, manufacturer support | Limited adaptation to a non-standard process, dependence on the supplier and its roadmaps |
| Dedicated application | Full adjustment to the process, control over data, ability to build a competitive advantage | Higher entry cost, longer implementation time, product and maintenance liability |
| Hybrid model | Quick start in standard areas, own modules where advantage counts | Complexity of integration between systems, need to manage two environments |
Decision chart
Below is a simple filter to first assess the situation:
Is the process standard?
Does the process provide a competitive advantage?
Does the company have a product owner and a development budget?
Do critical modules have to be their own?
The scheme results from a combination of the SaaS definition according to NIST, multitenancy architecture, shared responsibility model (Microsoft) and the economics of custom software projects.
Find out how we maintain and develop systems after implementation
List of questions before making a decision
Before you decide, answer a few questions:
- ✓Are you building a tool for a standard process or for a process that sets you apart from the competition?
- ✓Who will own the product on the company side - someone with time and decision-making?
- ✓What integrations are needed now and in two years?
- ✓How do you calculate the total cost - subscription × years + workaround time vs implementation cost + maintenance?
- ✓Do you accept the external vendor's restrictions and roadmap?
- ✓Do you need full ownership of code, data and infrastructure?
- ✓Can you start with a small MVP instead of "all at once"?
A good sales pitch shouldn't end with a simple "it depends." If the process is standard - SaaS is usually reasonable. If the process is non-standard, integrates many data sources, must distribute roles and access well, or is to be the foundation for further automation - a dedicated application becomes more profitable. And if the company does not want to risk a large implementation at once - discovery and a small MVP are a better first step than a one-time valuation of the "ideal system".
Schedule a free consultation →Frequently asked questions
Is SaaS always cheaper than a dedicated web application?
No. SaaS typically has a lower cost of entry, but with a large number of users, multiple integrations, and custom workarounds, the total cost in time it may grow faster than in a dedicated solution. You have to count TCO, not just the subscription fee.
When does your own system make the most sense?
When the process is non-standard, affects competitive advantage, requires extensive integrations or high control over roles, data and automation. The more unique the process is to the company, the less suitable the off-the-shelf SaaS is.
Is it possible to combine SaaS and a dedicated application?
Yes. This is a common and reasonable pattern. Standard areas operate in SaaS, and critical modules are built dedicatedly. This allows you to move quickly and gradually build an advantage where it really has value.
How to reduce the risk when building your own system?
Start with discovery, backlog and a small MVP. The greatest risk usually comes from trying to implement everything at once without clear priorities and product owner on the company side.
If you want to assess whether SaaS, your own system or a hybrid model will work better for your company, schedule a short consultation. We will map the process, we will show the risks and indicate a sensible first step without burning the budget.
