A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi julienBH,
Based on your descriptions, I assume you are considering to create a provider-hosted app using visual studio - Host the app externally from SharePoint and use all the options available with the Client-Side Object Model
Get started creating provider-hosted SharePoint Add-ins
If you want to get more help, you can go to MSDN forum where there’s a SharePoint Development and Programming category.
Regards,
Rena