Outcomes in the SOW
A perform agency writes the success metric into the SOW itself, not in a kickoff deck or a "success criteria" appendix that nobody signs. The metric has a number (the target, with a defensible methodology), a date (the deadline by which the metric must move), and a remediation clause (what happens if the metric does not move). If the metric does not move by the deadline, the agency works for free until it does, or the contract ends with a written postmortem the agency authors and the client publishes internally. No watered-down "we did our best" clauses, no "subject to market conditions" weasel words, no shifting baseline tricks. The r/marketing and r/agency subreddits both run quarterly threads on outcome-based contracts; the consensus from senior practitioners is that the discipline is the contract, not the agency. The IAB and the 4As both publish model SOW language for outcome-based engagements, and your in-house counsel should not need to draft these clauses from scratch in 2026.
Weekly demo, not weekly status
A perform agency demos work every week. Not a slide deck about what is in progress, not a Gantt chart with revised dates, actual working software, an actual journey going live in a sandbox, an actual agent answering questions in your Slack, an actual variant set ready to ship to a holdout cohort. If the agency has been working for three weeks and you have not seen a demo of something working end to end, you are paying for a project plan, not for outcomes. The discipline came from agile-shop culture in the 2000s (Pivotal Labs, ThoughtBot, the Spotify model, Basecamp's Shape Up methodology) and crossed over into marketing in the late 2010s as growth teams adopted product engineering rituals. Stack Overflow's r/agile and r/cscareerquestions threads have honest takes on what demo discipline actually looks like in practice when it works and what it looks like when it has decayed into theatre. The simplest test: the demo is a calendar event with a clear audience, an artefact (a working URL, a deployed branch, a recorded session), and a feedback log.
The kill clause
A serious perform agency includes a kill clause in the contract as a non-negotiable element. Both sides can walk after the discovery sprint (typically two to four weeks) with no penalty if the success criteria cannot be agreed in writing by the end of that sprint. The clause is the discipline because it forces an honest success-metric conversation at the start of the engagement, when the leverage is balanced between buyer and seller, rather than at the end, when the buyer has spent budget and the seller has booked revenue. Without the kill clause, the engagement drifts because there is no forcing function for the difficult conversation. Quora has a steady stream of CMO answers on 'when I should have fired my agency' and the absence of a kill clause is the most-cited regret in retrospect. A second clause we negotiate alongside the kill clause: a 30-day exit notice with a documented handover deliverable, so the relationship ends cleanly even when neither side wants to invoke the kill itself.
The operating cadence
Two-week sprints with written success criteria for each sprint. Weekly demos on Fridays (we picked Friday because it bounds the work week and provides a forcing function for shipping). Monthly business reviews with the CMO or VP Growth chairing, structured around the agreed success metric. Quarterly kill-list publication that documents what we shipped, what we shut down, what we learned, what we are trying next. This cadence is the operating model in practice. Without it, even an outcome-based contract drifts into status-deck mode within two quarters because the underlying rituals are not in place to hold the work to the contract. Skip any one element and the rest decays: skip the Friday demo and the sprint becomes opaque; skip the monthly business review and the metric becomes theoretical; skip the kill list and the team stops killing things.
What a perform agency is not
It is not a buying desk that runs ads and reports impressions. It is not a creative shop with a 'performance' product line bolted on after the brand work. It is not a media-mix consultancy that produces slide decks twice a year. It is not a martech reseller. A perform agency owns outcomes (defined in the SOW), runs an eval harness (in CI, refreshed quarterly), demos working software weekly (calendar-blocked, audience-defined), and publishes a kill list (with the postmortems). Anything missing one of those four artefacts is a different shape of partner, and the difference is not semantic. The IAB and Adweek coverage of agency-of-record transitions across 2024 to 2026 has named-brand examples of every variant; the perform shape is rarer than the marketing in the trade press would suggest, and that is part of why it is worth insisting on.
Further reading
Real, named sources the editor can swap in for specific URLs. We do not auto-link these because the right link changes over time. If you find a great primary source, write us and we will update the note.
- r/marketing, r/agency, r/cscareerquestions. Threads on outcome-based contracts, demo discipline, and kill-clause negotiations.
- Pivotal Labs and ThoughtBot writing on agile delivery. The reference texts for weekly-demo discipline that crossed from software into marketing.
- Quora topic: When to fire your marketing agency. Honest CMO answers. The kill-clause absence is the most-cited regret.
- Mark Ritson, Bob Hoffman columns. The two most-quoted modern critics of agencies that do not deliver outcomes.
- Adweek, Digiday. Trade press coverage of outcome-based agency contracts that worked and ones that did not.
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