Audience targeting is an advertising tool for attracting website visitors who may not know your business yet. First, define audience segments by age, interests, family status, city and other characteristics. You can then use the advertising platform to show them your content and brand advertising.
Targeting lets us segment an audience precisely, so content reaches people likely to be interested. This selective delivery can help reduce marketing waste.

For example
Before digital tools developed, companies spent large budgets reaching audiences through offline display advertising and the media. Branding was therefore accessible mainly to large corporations. That has changed.
Today, small and medium-sized businesses can build a brand too. Targeting lets us choose a smaller audience and communicate with it regularly. Some platforms allow audiences as small as 100 people. With a modest budget, a brand can become well known within its chosen audience, much like Apple, for example.