What type of advertising approach is best for clients with undefined target audiences?

Broad targeting is the most suitable advertising approach for clients with undefined target audiences because it allows advertisers to reach a wider range of potential customers without the constraints of specific demographics or interests. This approach maximizes exposure and can help identify segments of the audience that might engage with the product or service, even when the ideal customer is not clearly defined.

When utilizing broad targeting, advertisers can gather valuable data based on interactions, which can then be analyzed to refine targeting strategies in the future. This method is particularly effective in the early stages of a campaign, as it broadens the reach and increases the chances of discovering new audience segments that respond positively to the offerings.

In contrast, narrow targeting could limit exposure to just a few predefined segments, potentially missing out on potential customers. Lookalike audience targeting relies on existing customer data to find similar audiences, which can be ineffective without a clearly defined customer base. Retargeting ads focus on users who have previously interacted with a brand; however, if there is no established audience, this approach would be irrelevant. Broad targeting thus provides the flexibility needed to explore and identify who might ultimately become the target audience.