Scope: General buying framework; examples and official resources are US-focused. Local terms and rules vary. This guide has not been reviewed by a medical, financial or legal specialist.
Compare agencies using a common brief that states the audience, objective, constraints, deliverables and approval responsibilities. Ask how proposed work will be measured and what evidence supports the approach. A proposal should distinguish the activities the agency controls from results affected by other factors. Price is easier to assess once the scope, dependencies and ownership of the work are explicit.
Connect the proposal to a marketing plan
The Small Business Administration’s business guidance describes target market, competitive advantage, budget and measurement as parts of a marketing plan. Use these as context for a procurement brief rather than assuming a channel-specific proposal supplies the strategy. The source does not endorse an agency or establish that a particular campaign will work. The evaluation method here is an editorial framework for making proposals comparable.
Context source: SBA: Manage your business
Require a responsibility and evidence map
For each deliverable, record the person supplying inputs, the approval owner, the acceptance criterion and the reporting source. If an agency cites a case study, ask what work it performed, the starting situation and what else changed. Distinguish observed results from claims that the work caused them. Confirm who owns accounts, creative files, tracking definitions and exports. A future handover should not depend on access held only by an individual agency employee.
What to compare
Defined output
Hours or channel names do not explain what you will receive. Ask for a concrete deliverable and acceptance criterion tied to the brief.
Ask: What will be delivered, in what format, and what makes the work ready for approval?
Measurement quality
A report can be precise about activity while vague about business outcomes. Identify the actual source, baseline and limits of interpretation.
Ask: Which measures are observations, which are estimates, and what would make a result inconclusive?
Ownership and exit
Accounts and working files are operational assets. Set up access and handover responsibilities at the beginning rather than negotiating them during an exit.
Ask: Which accounts and files will we control, and what is included in the handover if the engagement ends?
Compare the approaches
An editorial decision framework, not a product ranking.
| Approach | When to consider it | Tradeoff to check |
|---|---|---|
| Project engagement | A defined deliverable with a clear acceptance point. | Changes to the brief need a process; ongoing operation may require a separate arrangement. |
| Ongoing retainer | A continuing programme with agreed priorities and reporting. | Needs regular scope and outcome review so recurring activity remains useful. |
Your decision checklist
Mark a question once you have a satisfactory answer. This is a preparation aid, not a suitability score.
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Questions that move the decision forward
Should I choose the agency with the strongest growth claim?
Ask whether the case is relevant and what evidence supports the claim. A business may grow while several things change at once. Evaluate the agency’s reasoning, contribution and transparency about limits rather than treating an impressive percentage as a forecast.
How can I compare different proposed channels?
Return to the common objective and audience. Ask each agency to explain why its channel fits, what prerequisites it needs and how you would recognize a poor fit. A shared decision brief is more useful than forcing every proposal into the same activity list.
What makes a pilot useful?
Set a bounded question, deliverable, measurement plan and decision date. Agree what evidence would justify continuing, changing direction or stopping. The pilot should reduce an uncertainty, not simply repeat the first month of an open-ended contract.
Sources and boundaries
Sources support the factual context indicated below. The checklist, scenarios and comparison method are Atlas editorial suggestions. A source link does not imply endorsement or product testing.
- SBA: Manage your businessRetrieved 2026-10-25 · Marketing-plan components and measurement context; agency selection and evidence checks are original editorial guidance.