Question

Difficulty: MediumAWS Global Infrastructure

A media streaming company is designing a live video platform on AWS. The architecture team needs to cache video segments closer to global viewers to minimize playback latency. At the same time, they must deploy their video transcoding backend across isolated physical facilities within a single geographic territory to protect against localized power or hardware failures. Which combination of AWS global infrastructure components should the company use to meet these requirements?

  1. Edge Locations to cache video segments, and Availability Zones to host transcoding backend servers across isolated facilitiesAnswer
  2. B
    AWS Regions to cache video segments, and Availability Zones to host transcoding backend servers across isolated facilities
  3. C
    Edge Locations to cache video segments, and AWS Regions to host transcoding backend servers across isolated facilities
  4. D
    Availability Zones to cache video segments, and AWS Local Zones to host transcoding backend servers across isolated facilities

Answer

Edge Locations to cache video segments, and Availability Zones to host transcoding backend servers across isolated facilities
Edge Locations are the endpoints used by Amazon CloudFront to cache content closer to end-users worldwide, thereby reducing latency. Availability Zones are isolated locations within an AWS Region that contain one or more physical data centers, providing the infrastructure redundancy needed to survive localized facility failures.

Step-by-Step Solution

1
Analyze the content caching requirement to reduce playback latency for global users.
Identify that Edge Locations (part of the AWS Content Delivery Network) are designed to cache content close to viewers.
Edge Locations host CloudFront caches globally to minimize latency.
2
Analyze the backend redundancy requirement to protect against localized physical failures within a single geographic territory.
Identify that Availability Zones (AZs) consist of one or more discrete, isolated data centers inside an AWS Region.
AZs provide localized physical isolation, power redundancy, and high-speed networking to survive single-facility outages.

Key Concept

AWS Global Infrastructure components and their specific roles: Edge Locations for low-latency content caching, and Availability Zones for localized fault tolerance.
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