Building the TCO model for RISE executive approval.

The TCO model that supports a RISE with SAP executive approval is a different document from the TCO model that sits inside the procurement team's working files. The executive approval model has to compress a year of analytical work into a structure that a CFO, a CIO, and a board investment committee can engage with, challenge, and approve. The compression is where most TCO models fail. The numbers are right. The structure is wrong. The board cannot see the decision the model is asking them to make. This article documents how to build the TCO model for RISE executive approval, with a structure that survives challenge and produces a clean decision.

Lead with the decision, not the data

The executive TCO model has to open with the decision the board is being asked to approve, not with the data that supports the decision. The decision is a commitment to a RISE term, a hyperscaler, a bundle composition, and a commercial envelope. Everything else in the model exists to support or constrain that decision. A model that opens with three pages of data and reaches the decision on page eleven will lose the executive audience before the decision arrives.

The countermove is to put a one page decision summary at the front of the model. The summary contains the recommended path, the alternative paths considered, the financial delta between paths, and the risk profile of each path. Everything that follows in the model is detail behind the summary. The board can engage with the summary, ask questions, drive the conversation, and reach the decision without paging through the full model.

Frame the alternatives concretely

Executive audiences do not approve options in the abstract. They approve choices between specific alternatives. A TCO model that compares RISE against a vague brownfield alternative will not produce a clean decision. The brownfield alternative has to be modelled with the same rigor as the RISE alternative, with named hyperscaler hosting if relevant, named infrastructure spend, named licensing structure, and named operational cost. The decision is then between two fully specified paths, not between a specified path and a sketched path.

The countermove to vague alternatives is to model at least three concrete paths. Path A is RISE as proposed. Path B is RISE with a renegotiated bundle structure. Path C is brownfield with a defined infrastructure strategy. Each path is a complete model. The board sees three numbers, three risk profiles, and three operating models, and chooses among them.

Show the cash curve, not just the total

A seven year TCO total is not what an executive audience needs to evaluate. The audience needs to see when the cash is spent. A path that totals one hundred million dollars over seven years, with sixty million in years one and two, looks different from a path that totals the same one hundred million spread evenly. The first path has a working capital profile the CFO has to plan for. The second does not.

The countermove is to present the cash curve alongside the total. A year by year cash chart shows the audience when the spending lands, what the peaks look like, and how each path compares to internal budget envelopes. The total is one number. The curve is the shape of the commitment.

Quantify the risk in dollars, not adjectives

Most TCO models describe risk in qualitative terms. High, medium, low. Adjectives do not survive executive review. The countermove is to quantify each material risk in dollars and to attach a probability. The risk of hyperscaler price increase in year three is not described as medium. It is described as a six million dollar exposure with a thirty percent probability, producing an expected value of one point eight million dollars to be included in the model. The risk of digital access true up at year five is not described as significant. It is described as a four million dollar exposure with a fifty percent probability, producing an expected value of two million dollars.

The aggregate expected value of all risks is then a line in the TCO total. The model is no longer a point estimate. It is a point estimate plus a probability weighted risk reserve, and the board can see what the risk reserve assumes.

Build the sensitivity tables

A single point estimate of seven year TCO is not enough for executive approval. The audience will ask, correctly, what happens if a key assumption shifts. What if user growth runs ten percent higher than planned? What if hyperscaler pricing increases by twelve percent in year three? What if the FUE conversion ratio is harsher than projected? The model should contain sensitivity tables that show how the TCO shifts under each assumption change.

The countermove to executive sensitivity questions is to anticipate them in the model itself. A two by two sensitivity table for the largest two variables, with the TCO outcome at each corner, lets the audience explore the variable space without breaking the model. Three to five sensitivity tables cover the variables the audience is most likely to probe.

Tie the model to the contract

The final discipline of the executive TCO model is to tie every number in the model to a specific contractual clause or a defensible assumption. The FUE volume is tied to the order form. The BTP credit allocation is tied to the order form. The hyperscaler pricing is tied to the bundled service description. The professional services envelope is tied to the statement of work template. Where a number is not tied to a contract clause, it is tied to a named assumption with a defensible source.

This discipline matters because it changes the conversation after approval. When something in the model proves wrong six months later, the team can trace which assumption failed, why, and what the recovery is. A model with no contract or assumption traceability cannot be reasoned about after the fact. A model with full traceability is a living document for the duration of the RISE term.

Conclusion

The executive TCO model is the document that turns a year of analytical work into a board decision. The compression has to preserve the rigor without burying it. A model that leads with the decision, frames concrete alternatives, shows the cash curve, quantifies risk in dollars, includes sensitivity tables, and ties every number to a contract clause or named assumption is a model that produces clean approvals and durable commitments. A model that misses any of these disciplines will produce approvals that unravel under operational pressure. The investment in executive grade modelling is the investment that protects the RISE commitment for the full seven year term.