A digital journey in the world of Ecommerce

Travel digitally in the world of the customer on trading sites - measurement tools, marketing tools and customer retention tools.
Where do we meet our customers? how much are they Who are the customers I would like to see on my website? How will they get back to me? How to accompany them from the entrance to the store through the delivery until after using the product?
A digital journey in which we will cross the road with the customer even before he enters our website.