How to Measure Influencer Marketing ROI in 2026 (A Practical Guide for Brands)

Influencer marketing has matured into one of the most powerful digital channels for brands, but it has also created one of the most persistent challenges in marketing today—how do you actually measure ROI? For years, influencer campaigns were judged using vanity metrics like likes, comments, shares, and follower growth. While these indicators can show engagement, […]