Explanation:
The correct answer is A: Create an override for the feature, assigning the engineer's user ID to the override identifier and setting a specific variation. Overrides allow you to pre-define the variation for selected users, ensuring that the engineer always receives Variation A when accessing the endpoint. This is supported by the reference link provided in the user comments, which explains how to use overrides in Amazon CloudWatch Evidently.
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In an Amazon CloudWatch Evidently project, an engineer has configured an A/B test with two feature variations. To exclusively use Variation A and ensure it is the only one served when accessing the application endpoint, which configuration should the engineer apply?
A
Create an override for the feature, assigning the engineer's user ID to the override identifier and setting a specific variation.
B
Create an override for the feature, using a specific variation identifier and setting the variation to a full allocation.
C
Introduce an experiment in the project, with a specific variation identifier and allocating no traffic to it.
D
Introduce an experiment in the project, using the AWS account ID and assigning a specific variation.