Google Analytics is one of the most common tools for this because it shows you where your website visitors come from and what they do after they arrive. If someone reads a blog post and then signs up for your email list, you can trace that journey. HubSpot and similar tools go even further by connecting content views to actual contact records. Knowing which content drives leads helps you focus your energy in the right place. What tracking setup do you think works best for a small marketing team?