I have an external application of file managing using SQL Server as Data Bases. For the front-end, I use "TypeScript" for the JavaScript "less" for the CSS and HTML5. For the back-end C# with a web API and the Databases SQL Server.
I want to integrate this application inside a 2013 SharePoint site.I'm not an expert in SharePoint and I have no idea how to proceed. Is that possible in Sharepoint Foundation? SharePoint Server? Do you have any ideas about how to do that?