Working with Odoo Website and eCommerce has a great advantage. A new application installed on the instance will automatically integrate with your existing applications. For example, when you install an eCommerce, you don't need to worry about the integration between Sales, Inventory, and Accounting. All the products you have made available in the sales application will be available in the online shop, of course, you can control the visibility of the shop and all the orders placed on online shop will be available in the sales application. You can configure the products, it's category and pricing strategy for the online customers.
Let's go to the Odoo instance; install the online shop (eCommerce) application; set up the online shop, product catalog, and user-friendly categories.