Every growing company eventually faces the same fork in the road.
You have a business problem—a unique workflow, a customer portal, or a data integration need—and you can’t find a perfect software solution on the market.
Do you: A) Buy an off-the-shelf SaaS product that gets you 80% of the way there? B) Build a custom software solution that fits your needs perfectly?
This is the “Build vs. Buy” decision, and getting it wrong is expensive.
- Build when you shouldn’t: You end up with a “forever project” that costs millions, distracts your team, and becomes technical debt.
- Buy when you shouldn’t: You end up with a generic tool that forces you to change your unique business process, killing your competitive advantage.
The Default: Why You Should Probably “Buy”
In 2025, the default answer should almost always be Buy. Why? Because software is hard. Building a custom application isn’t just about writing code; it’s about hosting, security patching, bug fixing, and upgrading it forever. When you buy a SaaS product (like Salesforce, HubSpot, or NetSuite), you are renting an army of thousands of engineers who are working 24/7 to improve that product. Buy when:- It’s a Commodity Function: Accounting, HR, CRM, Email. Do not build your own CRM. You cannot compete with Salesforce.
- Speed is Critical: You need a solution next week, not next year.
- It’s Not Your Core Business: If you are a logistics company, your “secret sauce” is moving boxes, not building HR software.
The Exception: When You Must “Build”
So, why build? You build when software is your differentiator. You build when the software is the business, or when it enables a unique process that your competitors cannot replicate. Build when:- It’s Your “Secret Sauce”: If you have a proprietary algorithm for pricing shipping routes that saves you 20%, do not put that in a generic Excel sheet. Build a platform around it.
- The Market Gap: You have looked at every vendor, and nothing exists that solves your specific problem.
- Integration Glue: You need to connect two disparate systems (e.g., your ERP and your warehouse robots) in a way no standard API can handle.
The Decision Matrix: 4 Questions to Ask
Before you hire a developer or sign a contract, ask these four questions.1. Is this problem unique to us?
- Yes: Consider Building.
- No: Buy. (If everyone has this problem, a vendor has already solved it).
2. Can we maintain it forever?
Building software is like buying a puppy, not a table. It needs feeding (updates), walking (security patches), and vet visits (bug fixes) for its entire life.- Yes: We have an engineering team and budget for maintenance. (Build)
- No: We want to set it and forget it. (Buy)
3. Does it drive revenue or valuation?
- Yes: This software will directly help us sell more or increase our exit multiple. (Build – own the IP).
- No: It’s just a back-office efficiency tool. (Buy).
4. What is the “80% Fit” cost?
If you buy a tool that meets 80% of your needs, what is the cost of that missing 20%?- High: The missing features will break our business model. (Build)
- Low: We can live with a workaround or manual process for the gap. (Buy)
The Third Option: “Buy and Extend” (Low-Code/No-Code)
Today, there is a middle path. You don’t have to choose between a rigid SaaS app and a ground-up custom build. Low-Code/No-Code platforms (like Microsoft Power Apps, Retool, or Zapier) allow you to Buy a core platform and Build custom workflows on top of it.- Example: Buy Salesforce for your CRM, but use a Low-Code tool to build a custom quoting app that feeds data into it.
Get an Objective Opinion
The hardest part of this decision is bias.- Your internal developers will always want to Build (it’s fun!).
- Your software vendors will always want you to Buy (it’s their commission!).