It’s less than a year until Microsoft turns off Basic Authentication for its Exchange Web Services (EWS). While new apps like Office 365 Pro Plus use modern authentication techniques, if you ...

Take advantage of API key authentication to control the access of applications and services to your Web APIs in ASP.NET Core.

They also should switch to using OAuth 2.0 for Exchange Online authentications in their applications, which is a "more secure and reliable" means of accessing data than Basic Authentication, according ...

Microsoft announced earlier this month that it's planning to deprecate the Exchange Web Services API for Office 365 users.