What should you do?

You are building a new version of an application hosted in an App Engine environment. You want to test the new version with 1% of users before you completely switch your application over to the new version.

What should you do?
A . Deploy a new version of your application in Google Kubernetes Engine instead of App Engine and then use GCP Console to split traffic.
B . Deploy a new version of your application in a Compute Engine instance instead of App Engine and then use GCP Console to split traffic.
C . Deploy a new version as a separate app in App Engine. Then configure App Engine using GCP Console to split traffic between the two apps.
D . Deploy a new version of your application in App Engine. Then go to App Engine settings in GCP Console and split traffic between the current version and newly deployed versions accordingly.

Answer: D

Explanation:

GCP App Engine natively offers traffic splitting functionality between versions. You can use traffic splitting to specify a percentage distribution of traffic across two or more of the versions within a service. Splitting traffic allows you to conduct A/B testing between your versions and provides control over the pace when rolling out features.

Ref: https://cloud.google.com/appengine/docs/standard/python/splitting-traffic