Custom Software vs Off-the-Shelf SaaS
Off-the-shelf SaaS is faster and cheaper to start with; custom software wins when the process is a competitive advantage, integrations are deep, or per-seat pricing stops scaling. Most teams should buy for commodity needs and build where they differentiate.
| Criterion | Custom Software | Off-the-Shelf SaaS |
|---|---|---|
| Time to first value | Weeks to months (built to spec) | Days (sign up and configure) |
| Upfront cost | Higher — you fund the build | Low — subscription only |
| Total cost at scale | Flat — you own it | Rises with seats/usage |
| Fit to your process | Exact — your workflow, your rules | Approximate — you adapt to the tool |
| Deep integrations | Unlimited — built for your stack | Limited to available connectors |
| Data ownership & control | Full — your infrastructure | Vendor-hosted, vendor terms |
| Maintenance burden | On you (or your partner) | Handled by the vendor |
| Competitive differentiation | High — nobody else has it | None — your rivals use it too |
Choose Custom Software when
Your workflow is a differentiator, you need deep integrations or data control, seat-based pricing is becoming your biggest line item, or no tool fits how you actually work.
Choose Off-the-Shelf SaaS when
The need is a commodity (email, CRM, accounting), you want to start this week, requirements are standard, and you would rather not own maintenance.
The verdict
Buy for commodity capabilities; build where you compete. The expensive mistake is bending your differentiating process to fit a generic tool — or building a bespoke version of something you could have licensed for $50/seat. Lazlo helps teams draw that line and builds the part that actually deserves to be custom.