How do I target customers who viewed specific product categories?

I'm struggling to create targeted marketing campaigns for visitors who have shown interest in specific product categories. My current approach is too broad, and I want to develop a more sophisticated strategy that allows me to understand and engage with customers based on their browsing behavior. I need a method to track category-level interactions, create personalized experiences, and increase the likelihood of conversion for these potential customers. What are the most effective techniques for segmenting and targeting customers based on their product category interactions?