The Marketing Decision Brief: 7 Fields to Reduce Reopened Debates

The decision that keeps coming back

Picture a familiar scene. A budget is moved on Monday. By Thursday someone asks why. By the next quarter the reasons are in three decks and one person's memory, and the person who remembers has changed teams.

This is a familiar pattern, and some research describes the cost around it. Gartner reported in May 2024 that 84% of marketing leaders and employees experience high levels of «collaboration drag» when working across functions. The survey behind it covered 329 marketing leaders and 78 leaders in other functions, fielded in July and August 2023. Gartner links the drag to too many meetings, too much feedback and unclear decision authority, and reports that companies where leaders see high drag are 37% less likely to exceed their revenue and profit objectives. That last figure is an association in a self-reported survey, not evidence that drag causes missed targets.

A separate view comes from the CMO Council. Its Marketing Transformation Performance Audit 2026, a self-assessment by more than 200 marketing leaders published on 22 July 2026, found that 31% say silos between marketing, IT, sales, product and finance still hinder cross-functional collaboration, and that only a third believe their CEO and function leaders are in lockstep. This too is self-assessment.

Neither study measures how often decisions are reopened, and neither tests a decision record. What they support is narrower: coordination across functions is a reported cost, and unclear authority is one of its named parts. Our reading, which the research does not prove, is that a decision that moves without its evidence, owner and review conditions can be easier to reopen than one that carries them.

The Marketing Decision Brief: seven fields

Use it for decisions that move money or commit a team: a budget shift, a channel change, a campaign go or no-go, a vendor switch. Keep it to one page.

#	Field	What goes in it
1	Decision	What is being decided, and what is explicitly left out.
2	Business objective	The result you want and the time horizon.
3	Evidence used	The data, its source, the period it covers and how much you trust it.
4	Assumptions and missing inputs	What you are inferring, and what you do not have.
5	Options considered	Every option, including the one you did not choose and why.
6	Ownership	Decision owner, approver, executor and who was consulted.
7	Success, review and rollback	The metric, the review date and the trigger that means you change course.

The order matters. Fields 3 and 4 separate what you know from what you are guessing. Fields 6 and 7 are easy to leave blank, and they are the ones a team will want when the question comes back six weeks later.

A worked example (synthetic)

This scenario is invented to show the fields in use. The numbers are illustrative.

A team is considering moving 10% of its budget from paid social to retail media. The reported ROAS looks higher on retail media. The two channels use different attribution windows, and there is no incremental test.

Field	Entry
Decision	Run a limited retail media test, funded by taking budget from paid social. Out of scope: a permanent budget shift.
Business objective	Find out whether retail media delivers sales we would not otherwise get. Answer by the end of the test.
Evidence used	Platform-reported ROAS for both channels, last 90 days. Trust: low for comparison, because the attribution windows differ.
Assumptions and missing inputs	Assumed: the higher ROAS partly reflects sales that would have happened anyway. Missing: an incremental test, and a common attribution window.
Options considered	A: no change. B: permanent 10% shift. C: a limited test at 3% of budget for four weeks, with a holdout. We chose C because B rests on numbers that do not compare.
Ownership	Owner: Head of Growth. Approver: CMO. Executor: channel manager. Consulted: finance, analytics.
Success, review and rollback	Success: incremental sales in the test group of at least +5% against the holdout (a placeholder: the team sets the real threshold before the test starts). Review: end of week four. Rollback: stop and restore the budget if the holdout shows no lift.

Look at what the brief did. It named what is known (the reported ROAS), what is inferred (the overlap with sales that would have happened anyway), and what is missing (an incremental test). It named who decides, set a size for the test, and said when to stop or review. A later challenge now has something to point at: the evidence is weak, and the team knew it.

A 20-minute test on your last decision

1. Pick the most recent marketing decision that involved money or a commitment.
2. Set a 20-minute timer and fill the seven fields from what you can find, not from memory.
3. Count the fields you could not fill. Note which ones.
4. For each empty field, write who would have to supply it and by when.

If field 7 is the one you cannot fill, our working rule is to treat that decision as still open: without a review condition, nobody has agreed when it would be reconsidered. Treat the empty field as the next piece of work.

Limits

A brief does not resolve a strategic disagreement. If two leaders want different outcomes, seven fields will show that clearly, but will not settle it. It also does not repair bad data: field 3 records how much you trust the evidence, it does not improve it. And it takes effort. Use it for decisions where being asked «why did we do this?» later would be costly, not for every campaign tweak.

We have not tested the brief against reopened decisions in a real team, and the research above does not do so either. Treat the seven fields as a starting structure and change them to fit your decisions.

The Olymuse lens

This sits under Judgment & Governance. In The Marketing Health Question: What Should a Team Know Before It Acts? we argued that the useful question is whether a team is ready for the decision in front of it. The brief is the same idea made portable: the decision carries its evidence, its gaps, its owner and its review date with it. Our point of view is that a decision should be something a team can inspect, with a person who owns it, rather than a conclusion people remember differently. That is the standard we think marketing tools, Olymuse included, should be held to.

This is an editorial reading of external research and a template, not a claim that Olymuse has measured a reduction in reopened decisions for any marketing team.

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Copy the Marketing Decision Brief above into your own document and fill it for your last decision. · Olymuse is in founder-assisted private alpha. Apply for the Private Alpha →