The default is buy.
If a category has three credible vendors competing for your business — accounting, CRM, helpdesk, payroll, conferencing — buy. Most teams ask us about building these things and we send them away with a shortlist of SaaS products instead. There is no engineering reward in re-implementing Stripe, Notion, or HubSpot.
The reasoning is brutal but consistent. A mature SaaS in a competitive category has burned a thousand engineer-years on edge cases you haven't thought of: timezones, currency, refunds, dunning, audit logs, GDPR exports, single-sign-on, regional tax. You can't out-engineer that with a six-month build. You'll arrive on day one with a product that has 60% of the obvious features and none of the unsexy ones.
When custom actually wins.
Custom wins when your workflow is the moat. If the way your operations team approves a transaction is what makes you a better business than your competitor, an off-the-shelf approval tool will flatten that into a generic form. You'll either bend the SaaS to fit (expensive integrations) or bend your process to fit the SaaS (you lose the moat). Either way, you've paid to become average.
We see this most often in three places. Resort operations: every property runs slightly differently and the local quirks matter. Finance ops glued to a third-party accounting platform that knows nothing about your specific inventory model. And real-time dashboards stitched from systems that were never meant to talk to each other.
Five questions before you build.
Before you sign an SOW with anyone (us included), answer these in writing. If three or more answers point toward buy, buy.
1. Is there a SaaS in this category with more than 1,000 paying customers? If yes, what specifically is missing for you?
2. Can your team articulate the workflow without using SaaS-product names? If you can only describe what you need in terms of "a Salesforce-but-for-X", you're describing a fork, not a product.
3. What's the cost of being wrong on the first version? If you can throw away v1 after six months and start again, you're prototyping — buy and validate first.
4. Will you own this codebase in five years? Or will the original engineers have left and the project be undermaintained? Custom software has a maintenance bill, and it shows up forever.
5. Is the engineering interesting? If the answer is no — if you're just lining up CRUD forms over a database — there's almost certainly a SaaS that does this better than you will. Build when the engineering is actually hard.
The honest test.
Here is the cheapest version of the build-vs-buy decision: pay for the top three SaaS options for one quarter. Use them. If by the end of three months your team is still complaining about specific friction that costs real money — and you can name it — then build the custom thing that removes that friction. Not a clone of the SaaS. The specific thing.
The teams who skip this step almost always regret it. They spend six months and ₹40 lakh building something only to discover the off-the-shelf tool would have worked fine with a tiny workflow change.
What we say no to.
We turn down build engagements that look like clones of existing SaaS without a clear workflow moat. We turn down engagements where the client wants "a custom CRM" or "our own Slack". We will gently suggest the SaaS that does this and offer to help with the deep configuration / integration instead — that's where the real engineering lives.
We say yes when the system has to talk to three internal sources nobody else knows about, when the workflow is the product, or when scale and reliability requirements rule out anything off-the-shelf. That's our zone.