RE: Dynamics 365 Sales integration
Integrating the applications lets you access data in Sales from Business Central, and in some cases the other way around. You can work with and synchronize data that both services have in common, such as customers, contacts, and sales information, and keep the data up to date in both applications.
For example, a salesperson in Dynamics 365 Sales can use the price lists from Business Central when they create a sales order. When they add the item to the sales order line in Dynamics 365 Sales, they can see the inventory level (availability) of the item from Business Central.
Conversely, order processors in Business Central can handle sales orders that are automatically or manually transferred from Dynamics 365 Sales. For example, they can create and post-sales order lines for items or resources that were entered in Dynamics 365 Sales as write-in products. For more information.