A headline market number can look straightforward while concealing several important definitions. The IAB South Africa internet advertising study conducted by PwC reports revenues on a net basis, after commissions and discounts, and covers the 2023 calendar year.
For a marketer reading the September 2024 publication, that means the reported R17.8 billion total is not simply the sum of every advertiser’s gross invoice. The period covered and the definition used should travel with the number whenever it is quoted.
Ask what the figure actually measures
The study describes an annual survey of major South African advertising agencies and brands. Its questionnaire responses are cross-checked with research inputs, including Omdia. That methodology offers an industry benchmark, but it is not a real-time counter of all advertising transactions.
A media agency’s billings, a platform’s revenue and a brand’s marketing budget can each include different items. Comparing them without adjusting the definitions can produce a misleading account of market share or growth.
Measurement beyond the market headline
Analysis: Industry revenue answers a market-sizing question. Campaign measurement asks whether a particular investment achieved its objective. Reach, impressions, conversions and incremental sales should be selected according to that objective, not used as interchangeable signs of success.
For business leaders, a useful reporting habit is to include a source, period, definition and limitation beside every major figure. That small discipline makes a presentation more credible and helps decision-makers recognise when two apparently comparable numbers are describing different things.
Better measurement begins before the dashboard: it begins with a clearly defined question.
Source
IAB South Africa / PwC: Internet advertising revenue report, methodology and 2023 results.