SIGN-IN TO AWS CONSOLE MOBILE APPLICATION WITH AN AWS ACCESS PORTAL OR THIRD-PARTY IDP URL

Summary from the TLDR InfoSec newsletter

AWS has added the ability to sign in via SSO to the AWS Console mobile app. Once a user provides their sign-in URL in the application, it will redirect to the sign-in URL and provide a similar experience as the web login flow. This post includes a walkthrough of the new sign-in flow.