---
title: Content Delivery Network Blog  | Learn
description: Learn | CDN Blog | About Content Delivery Network
image: https://blog.blazingcdn.com/hubfs/logo%20560-560-1.png
---

[![BlazingCDN](https://blog.blazingcdn.com/hubfs/Logo/blog-logo-w.png)](https://blog.blazingcdn.com?hsLang=en-us)

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[CDN Fundamentals](https://blog.blazingcdn.com/cdn-fundamentals?hsLang=en-us) [By Content Type](https://blog.blazingcdn.com/by-content-type?hsLang=en-us) [Advanced Concepts](https://blog.blazingcdn.com/advanced-concepts?hsLang=en-us) [Glossary](https://blog.blazingcdn.com/glossary?hsLang=en-us)

[⚡ Web Performance](https://blog.blazingcdn.com/web-performance?hsLang=en-us)

[🎬Video & Streaming ▾](https://blog.blazingcdn.com/video-streaming-cdn?hsLang=en-us)

[🔴 Live Streaming](https://blog.blazingcdn.com/live-streaming?hsLang=en-us) [📺 VOD & OTT](https://blog.blazingcdn.com/vod-ott?hsLang=en-us) [💰 Bandwidth & Costs](https://blog.blazingcdn.com/bandwidth-costs?hsLang=en-us)

[🏭 Other Industries ▾](https://blog.blazingcdn.com/cdn-industry-insights?hsLang=en-us)

[📺 Media & Broadcasting](https://blog.blazingcdn.com/media-broadcasting?hsLang=en-us) [💾 Software & SaaS](https://blog.blazingcdn.com/software-saas?hsLang=en-us) [🏗️ DevOps & Cloud Infra](https://blog.blazingcdn.com/devops-cloud-infra?hsLang=en-us) [📚 AdTech & Advertising](https://blog.blazingcdn.com/adtech-advertising?hsLang=en-us) [🎮 Gaming & Esports](https://blog.blazingcdn.com/gaming-esports?hsLang=en-us) [📱 Mobile Apps & Developers](https://blog.blazingcdn.com/mobile-apps-developers?hsLang=en-us) [🤖 AI & Machine Learning](https://blog.blazingcdn.com/ai-machine-learning?hsLang=en-us) [🏛️ Enterprise & Corporate](https://blog.blazingcdn.com/enterprise-corporate?hsLang=en-us) [📚 E-Learning & EdTech](https://blog.blazingcdn.com/e-learning-edtech?hsLang=en-us) [🏟️ Sports & Live Events](https://blog.blazingcdn.com/sports-live-events?hsLang=en-us)

[💰 Pricing & Costs ▾](https://blog.blazingcdn.com/cdn-pricing-and-cdn-costs?hsLang=en-us)

[Provider Pricing](https://blog.blazingcdn.com/provider-pricing?hsLang=en-us) [Cost Optimization](https://blog.blazingcdn.com/cost-optimization?hsLang=en-us) [Decision Support](https://blog.blazingcdn.com/decision-support?hsLang=en-us)

[⚡Compare ▾](https://blog.blazingcdn.com/cdn-comparison?hsLang=en-us)

[Provider Comparisons](https://blog.blazingcdn.com/provider-comparisons?hsLang=en-us) [Strategy Comparisons](https://blog.blazingcdn.com/strategy-comparisons?hsLang=en-us) [Ratings & Benchmarks](https://blog.blazingcdn.com/cdn-ratings-and-benchmarks?hsLang=en-us)

[📊 Benchmarks](https://blog.blazingcdn.com/cdn-ratings-and-benchmarks?hsLang=en-us)

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[Attack Protection](https://blog.blazingcdn.com/attack-protection?hsLang=en-us) [Encryption & Access](https://blog.blazingcdn.com/encryption-access?hsLang=en-us) [Video & DRM Security](https://blog.blazingcdn.com/video-drm-security?hsLang=en-us)

[📁 Case Studies](https://blog.blazingcdn.com/case-studies?hsLang=en-us) [🔌 Integrations](https://blog.blazingcdn.com/integrations?hsLang=en-us) [🛠️ Tools](https://blog.blazingcdn.com/cdn-tools?hsLang=en-us)

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# Content Delivery Network Blog | Learn | About Content Delivery Network

Learn | CDN Blog | About Content Delivery Network

[All](https://blog.blazingcdn.com/en-us) [Learn](https://blog.blazingcdn.com/en-us/tag/learn) [Learn - CDN Fundamentals](https://blog.blazingcdn.com/en-us/tag/learn-cdn-fundamentals) [Compare](https://blog.blazingcdn.com/en-us/tag/compare) [Video - Video & Streaming](https://blog.blazingcdn.com/en-us/tag/video-video-streaming) [Learn - Advanced Concepts](https://blog.blazingcdn.com/en-us/tag/learn-advanced-concepts) [Pricing - Cost Optimization](https://blog.blazingcdn.com/en-us/tag/pricing-cost-optimization) [Mobile Apps & Developers](https://blog.blazingcdn.com/en-us/tag/mobile-apps-developers) [Pricing - Pricing & Costs](https://blog.blazingcdn.com/en-us/tag/pricing-pricing-costs) [Benchmarks](https://blog.blazingcdn.com/en-us/tag/benchmarks) [Video - Live Streaming](https://blog.blazingcdn.com/en-us/tag/video-live-streaming) [Compare - Provider Comparisons](https://blog.blazingcdn.com/en-us/tag/compare-provider-comparisons) [Pricing - Provider Pricing](https://blog.blazingcdn.com/en-us/tag/pricing-provider-pricing) [Software & SaaS](https://blog.blazingcdn.com/en-us/tag/software-saas) [DevOps & Cloud Infra](https://blog.blazingcdn.com/en-us/tag/devops-cloud-infra) [Media & Broadcasting](https://blog.blazingcdn.com/en-us/tag/media-broadcasting) [Industries](https://blog.blazingcdn.com/en-us/tag/industries) [Pricing - Decision Support](https://blog.blazingcdn.com/en-us/tag/pricing-decision-support) [Tools](https://blog.blazingcdn.com/en-us/tag/tools) [Enterprise & Corporate](https://blog.blazingcdn.com/en-us/tag/enterprise-corporate) [AI & Machine Learning](https://blog.blazingcdn.com/en-us/tag/ai-machine-learning) [Security](https://blog.blazingcdn.com/en-us/tag/security) [Video - VOD & OTT](https://blog.blazingcdn.com/en-us/tag/video-vod-ott) [Learn - By Content Type](https://blog.blazingcdn.com/en-us/tag/learn-by-content-type) [Gaming & Esports](https://blog.blazingcdn.com/en-us/tag/gaming-esports) [Security - Encryption & Access](https://blog.blazingcdn.com/en-us/tag/security-encryption-access) [Video - Bandwidth & Costs](https://blog.blazingcdn.com/en-us/tag/video-bandwidth-costs) [Security - Attack Protection](https://blog.blazingcdn.com/en-us/tag/security-attack-protection) [Compare - Ratings & Benchmarks](https://blog.blazingcdn.com/en-us/tag/compare-ratings-benchmarks) [Compare - Strategy Comparisons](https://blog.blazingcdn.com/en-us/tag/compare-strategy-comparisons) [E-Learning & EdTech](https://blog.blazingcdn.com/en-us/tag/e-learning-edtech) [Security - Video & DRM Security](https://blog.blazingcdn.com/en-us/tag/security-video-drm-security) [Sports & Live Events](https://blog.blazingcdn.com/en-us/tag/sports-live-events) [AdTech & Advertising](https://blog.blazingcdn.com/en-us/tag/adtech-advertising) [Case Studies](https://blog.blazingcdn.com/en-us/tag/case-studies) [Learn - Glossary](https://blog.blazingcdn.com/en-us/tag/learn-glossary)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-26-2026-08-30-19-3605-AM.jpeg)](https://blog.blazingcdn.com/en-us/what-is-flac-lossless-audio-streaming-explained)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is FLAC? Lossless Audio Streaming Explained](https://blog.blazingcdn.com/en-us/what-is-flac-lossless-audio-streaming-explained)

 The short answer to what is FLAC: FLAC (Free Lossless Audio Codec) is an open, royalty-free audio format that ...

 Vadym Borovskyi ·  Oct 26, 2026, 9:32:02 AM 

[Read more](https://blog.blazingcdn.com/en-us/what-is-flac-lossless-audio-streaming-explained)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-26-2026-08-01-02-6977-AM.jpeg)](https://blog.blazingcdn.com/en-us/cdn-latency-testing-across-regions-tools-and-setup)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [CDN Latency Test: 7 Tools and Methods to Measure Real Speed](https://blog.blazingcdn.com/en-us/cdn-latency-testing-across-regions-tools-and-setup)

 A CDN latency test built around one global median will report healthy numbers while a single region fails. On a cold ...

 Vadym Borovskyi ·  Oct 26, 2026, 9:03:33 AM 

[Read more](https://blog.blazingcdn.com/en-us/cdn-latency-testing-across-regions-tools-and-setup)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-25-2026-08-30-18-1503-AM.jpeg)](https://blog.blazingcdn.com/en-us/video-quality-metrics-vmaf-psnr-and-ssim-explained)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Video Quality Metrics: VMAF, PSNR and SSIM Explained](https://blog.blazingcdn.com/en-us/video-quality-metrics-vmaf-psnr-and-ssim-explained)

 VMAF, PSNR and SSIM are the three video quality metrics most streaming teams run in encoding pipelines, and each ...

 Vadym Borovskyi ·  Oct 25, 2026, 9:32:22 AM 

[Read more](https://blog.blazingcdn.com/en-us/video-quality-metrics-vmaf-psnr-and-ssim-explained)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-24-2026-07-30-20-0452-AM.jpeg)](https://blog.blazingcdn.com/en-us/what-is-the-opus-codec-low-latency-audio-explained)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is the Opus Codec? Low-Latency Audio Explained](https://blog.blazingcdn.com/en-us/what-is-the-opus-codec-low-latency-audio-explained)

 The Opus codec is a royalty-free audio codec, standardized by the IETF as RFC 6716 in 2012, that encodes speech and ...

 Vadym Borovskyi ·  Oct 24, 2026, 9:31:57 AM 

[Read more](https://blog.blazingcdn.com/en-us/what-is-the-opus-codec-low-latency-audio-explained)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-24-2026-07-00-35-1077-AM.jpeg)](https://blog.blazingcdn.com/en-us/how-to-use-a-cdn-to-reduce-server-load-and-bandwidth-costs)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [How a CDN Reduces Server Load and Bandwidth Costs](https://blog.blazingcdn.com/en-us/how-to-use-a-cdn-to-reduce-server-load-and-bandwidth-costs)

 Most origin fleets are sized for cache misses, not for total traffic. A site delivering 100 TB a month at a 90% byte ...

 Vadym Borovskyi ·  Oct 24, 2026, 9:03:21 AM 

[Read more](https://blog.blazingcdn.com/en-us/how-to-use-a-cdn-to-reduce-server-load-and-bandwidth-costs)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-23-2026-07-30-16-9541-AM.jpeg)](https://blog.blazingcdn.com/en-us/what-is-aac-audio-aac-vs-mp3-vs-opus-for-streaming)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is AAC Audio? AAC vs MP3 vs Opus for Streaming](https://blog.blazingcdn.com/en-us/what-is-aac-audio-aac-vs-mp3-vs-opus-for-streaming)

 Advanced Audio Coding (AAC) is the lossy codec behind nearly every HLS and DASH audio rendition. The short answer to ...

 Vadym Borovskyi ·  Oct 23, 2026, 9:33:26 AM 

[Read more](https://blog.blazingcdn.com/en-us/what-is-aac-audio-aac-vs-mp3-vs-opus-for-streaming)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-23-2026-07-00-43-4400-AM.jpeg)](https://blog.blazingcdn.com/en-us/video-cdn-integration-with-s3-and-object-storage-explained)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Video CDN With S3 or Object Storage as Origin: Setup Guide](https://blog.blazingcdn.com/en-us/video-cdn-integration-with-s3-and-object-storage-explained)

 Serving video straight out of a bucket is the most expensive way to run an object storage CDN setup. At Amazon S3's ...

 Vadym Borovskyi ·  Oct 23, 2026, 9:03:59 AM 

[Read more](https://blog.blazingcdn.com/en-us/video-cdn-integration-with-s3-and-object-storage-explained)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-22-2026-07-30-18-6643-AM.jpeg)](https://blog.blazingcdn.com/en-us/video-aspect-ratios-explained-16-9-9-16-and-1-1)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Video Aspect Ratios Explained: 16:9, 9:16 and 1:1](https://blog.blazingcdn.com/en-us/video-aspect-ratios-explained-16-9-9-16-and-1-1)

 A video aspect ratio is the proportion between a frame's displayed width and its displayed height, written as ...

 Vadym Borovskyi ·  Oct 22, 2026, 9:32:08 AM 

[Read more](https://blog.blazingcdn.com/en-us/video-aspect-ratios-explained-16-9-9-16-and-1-1)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-22-2026-07-00-44-8612-AM.jpeg)](https://blog.blazingcdn.com/en-us/cloud-video-platform-and-cloud-video-streaming-a-guide-for-modern-media-2024)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Cloud Video Streaming Platforms: How They Work and What to Choose](https://blog.blazingcdn.com/en-us/cloud-video-platform-and-cloud-video-streaming-a-guide-for-modern-media-2024)

 Cloud video streaming moves video through four managed stages: ingest, transcoding into an adaptive bitrate ladder, ...

 Vadym Borovskyi ·  Oct 22, 2026, 9:02:53 AM 

[Read more](https://blog.blazingcdn.com/en-us/cloud-video-platform-and-cloud-video-streaming-a-guide-for-modern-media-2024)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Oct-20-2026-07-00-57-6787-AM.jpeg)](https://blog.blazingcdn.com/en-us/caching-static-and-dynamic-content-how-does-it-work-in-2024)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Static vs Dynamic Content Caching: How CDNs Handle Both](https://blog.blazingcdn.com/en-us/caching-static-and-dynamic-content-how-does-it-work-in-2024)

 Static assets get year-long TTLs. Dynamic responses get 1 to 60 seconds, and most of the remaining origin savings sit ...

 Vadym Borovskyi ·  Oct 20, 2026, 9:03:23 AM 

[Read more](https://blog.blazingcdn.com/en-us/caching-static-and-dynamic-content-how-does-it-work-in-2024)

← Prev 1 [2](https://blog.blazingcdn.com/en-us/tag/learn/page/2) [3](https://blog.blazingcdn.com/en-us/tag/learn/page/3) … [64](https://blog.blazingcdn.com/en-us/tag/learn/page/64) [Next →](https://blog.blazingcdn.com/en-us/tag/learn/page/2)

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