§ 01 — Method

The Build vs. Buy Matrix.

Every AI engagement begins with the same question: should this capability be built in-house, bought from a vendor, configured from an existing tool, or outsourced to a system that does not yet exist? We answer that question with a 2×2.

§ 02 — The matrix
Build vs. Buy — the four quadrants
Fig. 01 — Build vs. Buy — the four quadrants

Two axes. Four answers. One framework.

§ 03 — The axes
01
Internal vs. External — A question about where the capability lives once it ships. Internal capabilities are operated by your team and embedded in your stack. External capabilities are operated by a third party and accessed via an interface.
02
Off-the-shelf vs. Custom — A question about specificity. Off-the-shelf capabilities are general-purpose and configured to your context. Custom capabilities are designed to your context from the start.
§ 04 — The quadrants
QUADRANT I
Configure (Internal × Off-the-Shelf) — Use when the capability is well-served by an existing tool, the tool is already in your stack, and the gap is configuration, not capability. Example: lead scoring in HubSpot. Forecast roll-ups in Salesforce.
QUADRANT II
Build (Internal × Custom) — Use when the capability is specific to your motion, no tool serves it well, and the system needs to live inside your data estate. Example: pipeline scoring trained on your win data. Custom enrichment pipeline tied to your firmographics.
QUADRANT III
Buy (External × Off-the-Shelf) — Use when the capability is a commodity, the vendor's version is defensibly better than what you would build, and the per-seat math underwrites the spend. Example: CRM. Calendaring. Conversation intelligence.
QUADRANT IV
Commission (External × Custom) — Use when the capability needs to be custom, but the maintenance burden does not belong inside your team. You commission the build, take ownership of the system, and run it yourself. Example: the systems we build.
§ 05 — The diagnosis
Most stacks are over-indexed on Quadrant III and under-indexed on Quadrants II and IV.

The diagnostic finds the imbalance. The Blueprint corrects it. The build executes the correction.

§ 06 — Reference

What is the Build vs. Buy Matrix?

The Build vs. Buy Matrix is a decision framework for AI capability investments in a B2B SaaS revenue operation. It maps candidate capabilities onto two axes — Internal vs. External (who operates the system after deployment) and Off-the-Shelf vs. Custom (whether the capability is general-purpose or purpose-built for the company's specific motion) — to produce a written disposition: configure, build, buy, or commission.

The framework is designed to replace anecdotal vendor decisions with a document the CFO can underwrite and the CTO can ratify. Quadrant IV — Commission — is the disposition that covers capabilities requiring custom software built by an external party: the client takes ownership and operates the system; the builder does not retain a license or a seat.

§ 07 — Begin

Where does your stack sit on the matrix?