ZenDesk JWT SSO with Azure AD

We currently authenticate ZenDesk with Azure AD using SAML, but are told that only JWT SSO supports their multi-brand functionality. The new app would need to take authentication requests from ZenDesk, authenticate the user against Azure AD, and then send the user back to ZenDesk with the proper JWT. I see this as being an AWS Lambda function written in Node, but am open to suggestions. Although I know how to code, I'm not a programmer and I don't know if this app will need to store any data - I'm assuming it will not. Relevant links: ZenDesk JWT: [login to view URL] ZenDesk Multibrand SSO: [login to view URL] Deliverables One application that can accept ZenDesk JWT SSO requests, authenticate against Azure AD, and redirect the user to the correct ZenDesk page with the proper JWT token. Anything needed to make future modifications to the application (e.g. source code, documentation, etc).