Amazon CloudFront is AWS's Content Delivery Network (CDN) service that uses edge locations to cache and deliver content to end users with low latency.

Key points:

• Edge locations are data centers located in major cities around the world that cache content closer to end users
• When users request content, CloudFront serves it from the nearest edge location, reducing latency
• AWS Regions are geographic areas containing multiple Availability Zones for primary infrastructure
• Availability Zones are isolated locations within Regions for high availability
• AWS Direct Connect is for dedicated network connections between on-premises and AWS

Edge locations are specifically designed for content delivery and are the backbone of CloudFront's low-latency performance.