We have .NET project with frontend based on Web-Forms. We add alot of information with help of XML files every evening. And we also have tasks of the data processing in SQL database every night. And our customers can view data and do some changes in WEB interface. We want to migrate our customers from Web-Form based web portal to the using fiori apps in the cloud. So how we can conect our backend to HANA cloud platform and fiori apps?