AWS Certified Alexa Skill Builder – Specialty — Question 6

An Alexa Skill Builder published a skill that streams sounds to help users relax. The skill is becoming very popular and is available in many different locales around the world. More than 20.000 users are using the skill every week, and more than 500 users are added daily. The sound files are stored in Amazon S3.
What can the Builder do to ensure low latency and the best possible streaming performance?

Answer options

• A. Use Amazon CloudFront to deliver content and cache the audio files across different geographical regions.
• B. Migrate the sound files from Amazon S3 into Amazon Redshift to speed up the read operations.
• C. Use Elastic Load Balancing to handle the traffic generated by the increasing number of users.
• D. Enable cross-region replication on the Amazon S3 bucket policy to improve the skill's performance.

Correct answer: D

Explanation

Enabling cross-region replication on the Amazon S3 bucket allows the sound files to be replicated in multiple regions, which reduces latency by providing faster access to users in different geographical locations. The other options, such as migrating to Amazon Redshift or using Elastic Load Balancing, do not directly address the streaming performance improvements needed for media content delivery.