Versions

Now, let's imagine we want to update the application with new content:

1. Let's modify the welcome message to Hello Packt people!:

2. We will save the changes and deploy the application again:

gcloud app deploy app.yaml --project <project_id>

3. Now, if we switch to the Google Cloud Console and go to App Engine | Versions, we will see that a new version of the application has been deployed:

Note that all the traffic is directed toward the new version.