Reduce load times and improve routing accuracy with Multiple CDN's


CDN services host your website or application files on a network of web servers distributed around the world. A single CDN implementation can drastically improve page load times, but on their own, they are inherently vulnerable to performance fluctuations and frequent outages.

Multi-CDN allows you to effectively double your coverage map, ensuring 100% uptime even during provider outages. You will also experience significant performance gains and you can balance out a provider’s weaknesses with another vendor’s strengths.

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What is Multi-CDN?

You don't need a CDN aggregator or Multi-CDN provider to get started. Just use your DNS provider and enjoy complete control through a single interface. With multi-CDN and our management solution, you’ll be the fastest and enjoy 100% uptime across the globe. Constellix uses real-time machine learning to dynamically route traffic to the best CDN per user.

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Multi-CDN Setup

Easy to set up, with no upfront costs, and no coding required. Get started in two ways:

DIY - Build your own Multi-CDN load-balancing configuration with round robin, Failover, or Load Balancing.

Multi-CDN Wizard - All you need is the API keys for each of your providers, and we’ll automatically provision your CDN instances, DNS records, and monitoring checks for all of your providers in each of our five regions. Easily make changes later, such as turning on RUM/Traffic Steering, and adding and removing providers.

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Reliable Content Delivery
Smart Routing

Let us do the thinking for you and automate your application delivery with AI & ML.

We use a robust network of monitoring nodes and real-user data to routinely check which provider is the fastest in each region and dynamically update your DNS records to point to the fastest one.

You’ll notice huge performance gains even if your CDNs share the same PoPs.

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Enhanced CDN Failover
No Single Point of Failure

CDN services are prone to outages and service degradation, but that doesn’t mean you have to suffer the consequences. Multi-CDN allows you to seamlessly migrate traffic to your backup providers in the event of an incident to prevent downtime and reduce the scale of interruptions.

Our CDN load balancing services come with baked-in failover and outage recovery measures, that kick in automatically as soon as we detect a slowdown or unavailable provider.

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GeoDNS + Load Balancing
Location-specific CDN

The Internet is unpredictable, with performance varying wildly by location due to ISP peering practices and volatile network conditions. You can't blanket your user-base with a single provider anymore. Instead, use your vendors where they perform the best, or where they are more affordable with regional load balancing. Build your own custom configurations or try our Traffic Steering service which will dynamically route each user to the fastest CDN in their region, or for their specific location, or network.

How to use ANAME Records with Constellix

Our ANAME records are more Geo-Accurate than any other provider. You can use ANAME records with any of our GeoDNS services, and your queries will be answered based on the location of your end-users (not the location of our data centers). Unlike other providers, Constellix ANAME has no limitations and acts just as a normal CNAME would, but at the root of your domain.

You can use ANAME records with any of our other services, with any CDN provider that you want. ANAME also works with our multi-CDN management service and provisioning feature if you choose more than one provider.

How Multi-CDN Works - (Content Delivery Network)


DNS Lookup

A user makes a query for and the DNS provider answers with www record. In this case, the www record is a CNAME to a pool of multiple hostnames, each for different CDN providers.


CDN Decisions

The DNS provider uses internal logic to decide which CDN hostname to return. The decision can be based on hostname availability, response time, the location of the user, the user’s network, or a combination of these factors.


Best Hostname Chosen

The best hostname for that user is returned to the resolving nameserver, which resolves the CNAME record, allowing the user to connect to the CDN and load the desired website files.

Frequently Asked Questions

Multi CDN FAQ's

What is Multi-CDN?

Who needs multiple content delivery network providers?

How many providers can I add to the Constellix platform?

Do you have a list of CDN providers you are provisioned with?

Can you work with all CDN providers?

How are CDN decisions made?

How do record pools work with Multi CDN?

What makes Constellix Multi-CDN different from other providers?

Can I make decisions based on CDN commits?

Can I make performance-based CDN decisions?

Is a Multi-CDN solution easy to implement?

How much does a Multi-CDN solution cost?

Does a CDN increase site speed?

Who is the best CDN?

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