When a company needs a technology tool, it usually evaluates two paths: buying (or subscribing to) an existing platform, or developing a solution specific to its operations. The decision is not trivial and has long-term consequences in terms of cost, flexibility, and efficiency.
There is no universally correct answer. It depends on the process, volume, complexity, and strategy of each company. This article explains the criteria for making that decision clearly.
What is an off-the-shelf platform?
These are tools designed to serve many companies with similar needs: CRMs like Salesforce or HubSpot, ERPs like SAP, project management tools like Monday or Asana, or accounting platforms like QuickBooks or Xero.
They are well-built, have support, constant updates, and a large community. In many cases they are the right choice.
What is custom software?
It is an application developed specifically for a company's processes. It does not exist before the company commissions it. It is built around how the business works, not the other way around.
It can be a module that complements an existing system, a complete internal platform, an integration between systems that do not communicate, or an automated workflow that replaces manual work.
When an off-the-shelf platform makes sense
- The process is standard. If what you need (managing contacts, sending emails, invoicing) is the same as any other company in your sector, a generic platform already handles it well.
- You want to move fast. Platforms are ready to use. They do not require months of development, testing, or adjustments.
- Volume is low. If you use the tool occasionally or with few users, the cost of custom development is not justified.
- It is not a competitive advantage. If the tool does not differentiate your company from the market, there is no reason to invest in making it proprietary.
- Initial budget is limited. SaaS platforms allow you to start with low monthly costs and no large upfront investment.
When custom software makes sense
- Your process is unique. If the way your company works does not fit well into any existing platform, adapting it costs more than building something custom.
- You pay for features you do not use. Many companies pay for full platform licenses but use 20% of its features. The rest is noise and cost.
- You have complex integrations. When you need to connect multiple internal systems, generic platforms have limits. Custom software is designed with those connections from the start.
- Volume is high. If the process involves hundreds or thousands of daily records, the per-transaction cost of SaaS platforms can quickly exceed the cost of custom development.
- You handle sensitive data. If data cannot leave your infrastructure (finance, healthcare, government), a third-party cloud platform may not be viable. Custom software can be installed on your own servers.
- It is part of your business model. If the tool is what differentiates your company from competitors, owning it and having full control is a strategic advantage.
The most common mistake: adapting the process to the software
One of the most frequent problems is that companies, instead of finding a tool that fits how they work, end up changing how they work to fit the tool.
This has an invisible cost: the team learns workflows that are not natural, important nuances of the process are lost, and the reports the system generates do not reflect the reality of the business. Over time, parallel spreadsheets appear to "fill in what the system doesn't do."
The hybrid model: the best of both worlds
In many cases the answer is not one or the other, but combining both. Use a generic platform for what is standard (for example, email with Google Workspace or invoicing with QuickBooks) and develop custom only the modules that are critical and unique to the business.
This approach reduces costs, accelerates timelines, and concentrates development on what truly makes a difference.
How to make the decision
Before deciding, it is worth asking yourself these questions:
- How much of the process fits into available platforms? 80%? 50%? 20%?
- How much does it cost to adapt the process to the software vs. developing something custom?
- Can data be stored on third-party servers, or must it remain in our infrastructure?
- Is this process a competitive advantage worth protecting with proprietary technology?
- How much does volume grow in the next 2 years? Does the platform's cost scale well?
You do not need a perfect answer to all of them. But having clarity on two or three already guides the decision quite well.
At Rubit we do that analysis with you in the free diagnosis: we evaluate your process, review what tools exist, calculate comparative costs, and recommend the most efficient path — whether an existing platform, custom development, or a combination of both. No commitment required.