# Introduction
Performing the behavioral analysis of a typical e-commerce user is not an easy task. Indicators such as cart abandonment and conversion rates, although easily estimated, are hard to have as accurate data, specially having them segmented by category, brand, measurements chart or even product.
The Shopping Cart Plugin is a Sizebay product that aims to group the information obtained by the users' experience and generate accurate indicators for their e-commerce.
This document shows, in a simple way, how developers could incorporate Sizebay's Shopping Cart Plugin into e-commerces.
### **Understanding the sales funnel**
The Sales Funnel is, with no doubts, the most important indicator of commercial performance that an e-commerce has. In it we can easily identify, for example, the stages when the purchase experience gets stuck - where users look for products, find them, but are not motivated to buy.
* Page View - how many times users accessed e-commerce products
* Products added to cart
* Ordered products
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