How do you measure success in influencer marketing campaigns?

Via tracking link but you need to set up objectives.

It has to be through a tracking link or affiliate code. If not, then you could see if revenue was increased, but this is much less accurate.

Success in influencer marketing campaigns can be measured through a variety of key performance indicators (KPIs), including reach and impressions, which assess how many unique individuals have seen the content. Additionally, tracking engagement metrics such as likes, comments, and shares, along with conversions and sales generated from the campaign, provides insight into its overall effectiveness and impact on brand awareness and revenue growth.