App signing is the process of digitally signing mobile app executables which is a mandatory step in the mobile app deployment process.
Apps that attempt installation without being signed will be rejected by either the respective app stores or the package installer on the mobile device.
Mobile app developers need to be familiar with app signing as it is part of the release process. While this has not been a requirement for DevOps and IT Operations teams, knowledge of app signing is becoming a necessity because these teams are responsible for deploying apps to end users.
Read this guide to learn best practices, avoiding common hiccups and pitfalls, and ensuring successful app signing for mobile app deployments.