Moving a version of an app onto real servers so it becomes available to users on the internet.
Deployment is the moment an app moves from a developer's machine or build environment onto the internet. It includes packaging the code, uploading it to servers, configuring the database and secrets, and connecting the domain and SSL certificate. Every later update is another deployment.
Manual deployment is error-prone: a forgotten setting, an old file or downtime mid-update. Modern platforms make it automatic and fast, with the ability to roll back. Fanann deploys apps to managed hosting in one click after testing. Practical tip: ship small, frequent updates instead of one huge release every two months; problems are easier to trace. Avoid deploying right before your peak, such as Thursday evening for a restaurant or the first day of a sale for a store.