Every major CDN is fast in a benchmark. The one that is fastest for your users depends on where they are, what you serve, how often it changes and where your origin runs. Choosing on a feature list alone often leads to paying for capabilities you never use, or missing the one you needed. This guide compares the main providers in plain terms and gives you a way to decide with data rather than marketing.
The short version
| Provider | Strongest fit | Things to know |
|---|---|---|
| Cloudflare | All-round websites and applications that also want DDoS protection, WAF, bot management and DNS from one provider | Many performance features (such as Argo Smart Routing) are separate add-ons; plan tiers change what you can configure |
| Fastly | Highly dynamic, programmable sites that need precise caching and near-instant, tag-based purging | Very flexible (VCL and Compute) but needs engineering skill to configure well |
| Amazon CloudFront | Applications already on AWS, especially with S3, ALB or API Gateway origins | Integrates with AWS WAF, Shield, Lambda@Edge and CloudFront Functions; origin traffic from AWS services is billed favourably |
| Bunny (bunny.net) | Static assets, images, video and downloads where predictable, low cost matters | Simple to run, with image optimisation, storage and edge scripting; fewer enterprise security features |
| Google Cloud CDN and Media CDN | Applications behind Google Cloud load balancers; Media CDN for large video and download libraries | Configured as part of the load balancer; pairs with Cloud Armor for security |
| Akamai and Azure Front Door | Large enterprises, regulated industries and Microsoft-centric estates | Azure’s classic CDN and Front Door tiers retire in 2027, so new builds should start on Front Door Standard or Premium |
Question 1: where are your users?
Latency is decided by the distance between the user and the nearest edge that has your content cached. If most of your users are in North America and Europe, every major CDN performs well. If many are in India, Southeast Asia, Africa or South America, network coverage and peering in those regions differ much more between providers. Look at real-user measurements from those countries, not a global average.
Question 2: what do you serve?
- Mostly static files and images: almost any CDN works; cost and image optimisation features decide.
- HTML pages from a CMS or shop: you need good cache-key control, cookie handling and fast, targeted purging so content updates appear immediately.
- APIs and logged-in applications: little can be cached, so connection reuse, smart routing to the origin and edge logic matter more than cache size.
- Video and large downloads: throughput, storage integration and egress pricing dominate.
Question 3: how often does content change?
If prices, stock or articles change constantly, purge speed and precision matter. Fastly’s surrogate keys, Cloudflare purge by tag and CloudFront invalidations all work differently, with different speed and cost. A CDN that can only purge everything, or purges slowly, forces short TTLs and a lower hit ratio.
Question 4: where does your origin run?
Keeping the CDN and origin with the same provider can lower origin transfer costs and simplify security, for example CloudFront in front of AWS, or Cloud CDN in front of a Google Cloud load balancer. It also lets you lock the origin so it only accepts traffic from the CDN, which stops attackers bypassing your WAF.
Question 5: what security do you need at the edge?
If you need DDoS protection, a managed WAF and bot management, compare those products and their pricing as carefully as the CDN itself. Some teams pair a security-focused provider for HTML and APIs with a low-cost CDN for large static files.
Question 6: do you need edge compute?
Cloudflare Workers, Fastly Compute, CloudFront Functions and Lambda@Edge, and Bunny Edge Scripting can run redirects, authentication, A/B tests and personalisation at the edge. They differ in language support, limits and cost model. If you only need redirects and header changes, most CDNs handle that with simple rules and no code.
How to decide with data
- Shortlist two or three providers that fit the questions above.
- Put each in front of a test hostname with the same cache rules.
- Measure time to first byte and full page load from your top countries, ideally with real-user monitoring.
- Compare the cache hit ratio and origin traffic, not only the speed.
- Estimate the monthly bill from your real traffic, including requests, egress, WAF and add-ons.
When one CDN is not enough
Large sites sometimes use two CDNs: for resilience against a provider outage, or to use the fastest network in each region. Multi-CDN works well, but only when cache rules, purging and certificates stay consistent across providers.
Get help choosing and running it
TechProvidence engineers manage Cloudflare, Fastly, Bunny, Amazon CloudFront, Google Cloud CDN, Akamai and Azure Front Door, and recommend based on measurements, not vendor preference. See our CDN management and optimization service, or contact us for a complimentary CDN review. If your origin is slow on cache misses, our Varnish and NGINX teams can help there too.
