CloudFront – CDN

• Distribute content with low latency and high data transfer speeds. CDN reduces the load on origin servers
• Uses AWS edge location to distribute content
• Edge location – Location to cache the content. It is different than AWS region
• Using CDN content at edge location can be modified or restricted based on geo location
• Origin – Origin of the content. S3 for static objects, EC2 for dynamic content 
• Distribution – Collection of Edge location from where content is distributed to users
• Two type
  • Web – for web content
  • RTMP – for media distribution
• TTL – Time to Live, time after which content is refreshed from origin
• Invalidate object – Force to get the content from origin
• Use CDN for signed URL to distribute paid content

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