Why is it difficult to measure ROI for content marketing?

Because there are 7 key content marketing metrics that matter:  lead quality, sales, web traffic, onsite engagement, social media engagement, SEO success and exposure & authority. We couldn’t lay down these metrics into a final result so we need to manually calculate some of these metrics by using simple formulas.

In my opinion, to determine your content marketing ROI, You always need to plan ahead, set specific goals, and choose just a few meaningful metrics to track.