Glossary
A creator with roughly 10,000 to 100,000 followers (10K to 100K on YouTube), typically outperforming larger creators on engagement rate, conversion, and cost per acquisition.
A micro-influencer is a creator with a smaller, more curated audience than a mega-creator. The thresholds vary by platform, but on YouTube the working definition is roughly 10,000 to 100,000 subscribers.
Engagement rate is inversely correlated with audience size, and conversion follows engagement. A micro-influencer's smaller audience is more curated, more trusting, and more likely to act on a recommendation. A 20,000-subscriber creator often sees 4 to 8% engagement, while a 2,000,000-subscriber creator might see under 1%. For a brand, that means a portfolio of fifty micro-influencers can out-deliver a single mega-creator at a fraction of the cost, if you can find and manage fifty creators efficiently. The reason most brands do not scale micro-influencer programs is operational cost, not creative direction. Read the micro-influencer trends article.
Infmap's discovery surfaces micro-influencers by topical relevance and audience quality, not by subscriber count, so the high-fit small creators who convert best are not buried under the biggest channels. The campaign management software layer is what makes a 50-micro-influencer wave manageable: briefing, contracting, approval, and payment are batch-handled in one workflow. On YouTube specifically, watch-through is the metric that tells you a micro-influencer's audience actually watches. See the find YouTube influencers guide.
A kitchen brand runs a 40-micro-influencer YouTube campaign at $1,800 per creator, totaling $72,000, against a single mega-creator quote of $75,000. The micro wave attributes 2,400 conversions at $30 CPA. The mega-creator the brand tested previously attributed 180 conversions at $416 CPA. The portfolio out-delivered the single endorsement at a fraction of the cost per acquisition, but only because the platform made 40 creators manageable.