What is AWS CloudFront?
Amazon Web Services provides the Content Delivery Network (CDN) service known as AWS CloudFront. With low latency and high transfer speeds, it helps deliver your website, APIs, videos, and other web content to users worldwide. Your content is cached by CloudFront at edge locations closer to your users around the world, making access quicker and more reliable.

Why AWS CloudFront is Important?
Users today expect quick and dependable access to online content in the digital age. By minimizing latency and optimizing content delivery worldwide, CloudFront addresses this issue. In addition, it improves security, lessens the load on your origin servers, and offers scalability to deal with sudden spikes in traffic. CloudFront aids in enhancing both performance and user satisfaction, regardless of whether you run a small website or a large application.
How CloudFront work ?
AWS CloudFront is a content delivery network (CDN) that reduces latency and improves performance by caching and delivering content (such as websites, videos, and APIs) from the edge locations that are closest to users. When required, it pulls data from origin servers like S3, EC2.

Challenges of Using AWS CloudFront
Complex Configuration for Beginner
For beginners, CloudFront’s various configuration options (behaviors, cache policies, origin settings, etc.) may be too much to handle. A deeper comprehension of CDN and AWS services may be required for custom error responses, security policies, and caching rules.
Latency in Cache Invalidation
Invalidating the old cached version across global edge locations may take time and cost money when content is updated at the origin. Even though AWS lets you invalidate cache, doing so frequently or on a large scale can increase your operational overhead and delay content delivery.
Dependency on Other AWS Services
Although CloudFront is fully integrated with AWS services like S3, Lambda, and WAF, it can be used with origins other than AWS. Users who use hybrid architectures or other cloud platforms may experience integration difficulties or lose some of the benefits of seamless AWS integration.
Limited Real-Time Logging
When it comes to real-time monitoring and troubleshooting, CloudFront’s standard logging features can be a problem because they are delayed by several minutes. Real-time logs are available, but they cost extra and need to be integrated with other AWS services like CloudWatch or Kinesis.
Use Cases of AWS CloudFront
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Website Acceleration
Deliver websites and web apps faster, especially those with a global audience.
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Video Streaming
Stream live or on-demand video with low latency and high quality.
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Software Distribution
Quickly distribute software, patches, and updates globally.
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API Acceleration
Reduce latency for APIs by caching and serving responses closer to clients.
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Security Enforcement
Use CloudFront to enforce SSL/TLS and protect your origin servers from malicious traffic.

Advantages of AWS CloudFront
Faster Content Delivery
CloudFront speeds up delivery and reduces latency by caching content at global edge locations, enhancing the user experience.
Improved Security
Your applications will be shielded from DDoS attacks, common web exploits, and unauthorized access thanks to CloudFront’s integration with AWS Shield and AWS WAF.
Scalability
Automatically handles spikes in traffic without requiring you to provision extra infrastructure.
Cost-Effective
When compared to serving content directly from your origin server, you only pay for data transfer and requests.