During the installation you are prompted to specify a path to place the encryption key file DotshoppingcartMaster.key. This file is very important. It contains the key which is used to encrypt the sensitive data e.g. credit card# inside the database. The file itself is protected by DPAPI of Windows. So it's a good idea to create a backup of the file and save it offline. In case the machine crashes you can restore the DotshoppingcartMaster.key.

Here is the how you back up the DotShoppingCartMaster.key.

DotShoppingCart Suite comes with a separate windows service called OrderPipeline. If you don't want to run OrderPipeline as a windows service, here is how you can move it inside the web application.