Media buying agencies strategy framework: report and log

A media strategy earns its keep when the team can check it while the campaign runs. When a media buying agency books the plan, the client should ask it for a decision report and a decision log. The report tests the working chain: outcome, audience change, media task, channel role, buying choice and measurement.

What to take away

Report against one behaviour

The decision report needs a single behaviour to report against. Translate the commercial brief into a behaviour that media can plausibly influence: discovering a service, recalling it at a buying moment, visiting a store or completing an eligible enquiry.

Keep sales forecasts separate from media delivery, because product, price, availability and conversion experience also affect the result. The IPA's guidance on briefing an agency treats the brief as a shared foundation for the client and agency, so settle the problem, decision owners and constraints there.

The guide to a distinct role per channel explains how each channel's job follows from the behaviour chosen. Name the channel and its job before the first measure is defined.

Choose measures for three layers

Select a small set of measures for delivery, audience and outcome. Define each field, source, refresh interval and owner, so that a number on the report can be traced and challenged.

Publisher-side metrics should not quietly replace an advertiser's business measure. Incompatible channel currencies should not be added into a synthetic total without a documented method.

Ofcom's Media Nations report adopts a cross-platform perspective across the TV, online video, radio and audio sectors. That is useful context for a plan. It is not a method for merging the currencies that each channel reports in.

Keep the geography visible

Record who must change, where they can be reached and what is uncertain. UK audience evidence may inform an England plan, but the geography must stay visible in every row of the report.

Ofcom's media use and attitudes report provides evidence on media use, attitudes and understanding among UK adults aged 16 and over. It is useful context, not proof that a particular advertising segment behaves identically.

Television planning may use Barb's account of how total viewing is measured, while out-of-home planning may use Route audience research. Both cover UK or Great Britain systems, so neither should be presented as an England-only outcome study.

Write exclusions as carefully as inclusions. Removing existing customers, people outside the service area or audiences that cannot lawfully be targeted can alter both the media task and the measurement denominator.

Write the rules the report checks

A report can flag a departure only if the rule was written first. For every channel, specify geography, dates, inventory boundaries, frequency approach, brand-safety controls, account ownership and who may approve a change.

Programmatic work also needs a map of advertiser, agency, platform and publisher roles. IAB UK's programmatic guide provides UK industry orientation to that supply chain. Claim approval and data duties sit in the UK rules and ethics guide: the ASA and the CAP Code govern advertising claims, and UK GDPR and PECR govern personal data and device storage.

Make trade-offs explicit. More reach may mean less repetition; stricter inventory controls may reduce available supply; a narrower attribution window may omit delayed responses. A sound framework records the chosen compromise and the person authorised to accept it.

Avoid letting a platform forecast become the strategy. Forecasts can compare configured scenarios, while the strategic choice still depends on the audience, creative, buying controls and the consequence of missing the objective.

Keep a decision log

Keep unresolved assumptions in a decision log and assign a date for review. The log makes the framework useful during buying, when conditions change and the team must decide whether to hold course or amend the plan.

Each entry needs five fields:

The completed strategy can fit on several pages, provided a reader can trace every channel choice back to the commercial problem. Quality checks then run against the log and the change record. For the slips that undermine a plan itself, see strategy mistakes.

Before you act

Common questions

What should a decision report contain?

Select a small set of measures for delivery, audience and outcome. Define each field, source, refresh interval and owner. Publisher-side metrics should not replace an advertiser's business measure, and incompatible channel currencies should not be added without a documented method.

What belongs in a decision log?

Each unresolved assumption, the evidence so far, the owner, a review date and the decision taken. The log lets the team decide whether to hold course or amend the plan when conditions change.

Why should a platform forecast not become the strategy?

Forecasts can compare configured scenarios, but the strategic choice still depends on the audience, creative, buying controls and the consequence of missing the objective. The forecast is a comparison tool, not a substitute for deciding what the media must achieve.