Model is where the value logic becomes a working calculator. We take the quantified drivers from Map, set assumption ranges and sensible defaults, and turn the structure into a tool the team can use in live business-case conversations. The goal is not to create a spreadsheet for its own sake. It is to make the commercial logic usable, adjustable, and credible.

A strong calculator needs more than formulas. It needs benchmark-backed defaults, clear input fields, transparent assumptions, and guardrails that keep the model from drifting into over-claiming. We structure the tool so common cases are fast to build, while still allowing deeper scenario work when the opportunity warrants it.

The calculator is designed to support both outside-in and inside-out value conversations. Outside-in mode starts from a customer profile and estimates likely impact using segmented defaults and scenario ranges. Inside-out mode starts from a target business case and works backward to show what operating deltas would need to be true. In both cases, the output stays tied to the same four Widget Co value pillars established earlier in the process.

By the end of Model, the team has more than a value hypothesis. They have a reusable calculator that turns assumptions into annual value, scenario views, payback, and ROI outputs that can hold up in executive and customer conversations.