Almost every operations leader eventually faces the same choice: the software you use doesn't quite fit how you work. You can change how you work, buy something different, bend the current tool with integrations and add-ons, or build exactly what you need.
There's no universally right answer, but there is a reliable way to reason about it. Build what differentiates you; buy what doesn't; extend when the gap is narrow.
Buy when the process is standard
Accounting, payroll, email, basic CRM and help desks are solved problems. Thousands of companies use the same workflow, and specialist vendors invest more in those products than you ever could. Adapting your process to a well-designed tool is usually cheaper than adapting a tool to your process.
Extend when the gap is narrow
If a tool fits most of your needs, integrations and small custom components can close the gap: syncing data between systems, automating a manual step, or adding a missing report. This is often the best-value option — as long as extensions stay small and well documented.
Build when it's your advantage
Custom software earns its cost when the workflow is how you compete: a pricing engine, a unique customer experience, an operational process competitors can't easily copy. Forcing these into generic tools erodes exactly what makes you different.
Five questions to decide
- Is this process a source of competitive advantage, or simply a cost of doing business?
- How many workarounds does the current tool already need?
- What will licences cost over five years at your expected growth, compared with building and maintaining?
- Who owns your data in each option, and how easily can you leave?
- Do you have — or can you access — the team to maintain custom software after launch?
Count the full cost of building
The build estimate is only part of the cost. Hosting, security updates, bug fixes and new requirements continue for as long as the software is used. A reasonable rule is to expect ongoing maintenance to cost a meaningful share of the original build every year.
A hybrid is usually the answer
In practice, most well-run companies do all three: standard SaaS for back-office functions, integrations to connect them, and a small amount of custom software where it matters most. The skill is in drawing those boundaries deliberately — and revisiting them as the business changes.
Written by
DevTechnology Delivery