exchange web services modern authentication

Moving forward, to continue using EWS to connect and interact with Exchange Online, developers must write their applications to support OAuth 2.0 – also known as Modern Authentication.

It is important to note that this change will not have any effect on Exchange on-premises deployments. In this case, Microsoft is beginning the deprecation of EWS by making Octothe final day that Exchange Online will accept EWS connections that use Basic Authentication. In order to drive organizational and individual adoption of newer technologies, the older technologies – such as EWS – are gradually phased out. As the API successor to EWS, Graph has been developed to provide developers with new and exciting ways to access the rich data that underlies Microsoft 365. This pattern holds true with EWS and Graph as well. The way that these services interact with one another and third-party applications is controlled via an Application Programming Interface (API) – namely, either Exchange Web Services (EWS) or Microsoft Graph.Īs with most technologies, older tech is often replaced with more secure, efficient, and robust new tech.

The Microsoft 365 suite of applications and services is ever-growing and improving.

Exchange web services modern authentication