Let's understand in simple words, product customization for ecommerce means allowing customers to change or personalize a product online before buying it. Instead of one or two boring images of the product, your store shows 3D views, lets customer design the product their way, and interact with them. Before they check out, they can change the colors, add text, share pictures, and make choices about the patterns, shapes, and sizes. They can also choose the materials, styles, and features. Think of it like this. Other businesses say, "Here's what we sell,” but you’re saying, “Here’s a base product. Now make it yours.” That shift is powerful and helps customers trust you.