There are a number of things you need to watch out for when connecting to APIs secured with Azure AD from SharePoint Framework solutions.
Join us for a dev tutorial in Munich and learn how to make the best use of the latest Office 365 capabilities to build solutions for your organization.
If you host your APIs on Azure, secure them with Azure AD and want to use them in the SharePoint Framework, you need to setup CORS correctly.
When working with Azure Functions, items added using queue and table bindings are handled differently, and you should keep that in mind.
Recently I migrated my custom Node.js API from an Azure API App to an Azure Function. So how much did I have to change exactly?