Integration is always a painful task. Working with an eCommerce application that is not connected to the business is like driving a car without full control. You cannot have a clear view of the business when your ERP and eCommerce are not integrated. Your customer does not have an amazing experience until you consolidate the sales figures from all the channels. By the time you do this, it may be too late to take the decision.
All the applications installed on Odoo instance are integrated by default. For example, an order generated from back-office sales and orders placed online on the website is the same and can be found under the Sales application.
Let's see how you can analyze the sales generated from the different channels, back office, and eCommerce.