About SD logic, It says every trade is base on service exchange, and the customers always be a co-creator to the product. Also the service could be in lots of formations.
In the financial service industry, follow this logical: the customer would be also providing services to the bank. we manege our account, we use our account , we open another account ...and so on those are all could be considered as services that we provided to the ban in exchange the bank's services.
