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Case analysis

IWG: define the expansion test before scaling

A search experiment illustrates explicit hypotheses and review criteria.

Agency-reported work; source checked on 11 September 2026.

The original task

Croud describes IWG testing broader keyword matching to expand relevant search reach.

Work described by the agency

The source reports match-type combinations, agreed success metrics and a review with Google.

Editorial interpretation: what to apply

Before expansion, write which change is being tested and which decision the result could justify. Protect the comparison from unrelated changes. Increasing spend should follow an explicit interpretation of evidence, with a record of what remains unknown.

Data and applicability limits

The case concerns existing search activity. Its outcomes cannot be generalized to every account, match type or new market.

Before using this example in a brief

  • Request the starting conditions and the agency’s precise contribution.
  • Ask which materials and process can be demonstrated for your audience.
  • Define an acceptance test that does not depend on repeating a headline result.
Croud

Source and reading context

The linked publication supports the factual example or technical context. The checklist and commissioning advice are editorial interpretation.

Read the original source