Content Delivery Network

DELIVERY MEANS EVERYTHING

Telia’s Content Delivery Network evolves with the internet, resulting in the highest performance of any CDN on the market, being as much as 30 percent faster than the competition. In order to help our clients do business successfully online, we deliver any data, anywhere, anytime, which is all possible through the world’s first global CDN federation and massive regional presence.

 
Popular uses and benefits of Telia CDN are:
 
  • Large capacity content delivery
  • Video and audio streaming
  • Web acceleration
  • Protection from volumetric DDoS attacks
  • Protection from traffic surges
  • Protection and cloaking of origin servers

TELIA CONTENT DELIVERY NETWORK

  • 64 Tbps
    Network Capacity
  • 130 +
    PoPs
  • 6
    Continents
  • 4K +
    Interconnects
  • 64 Tbps
    Network Capacity
  • 130 +
    PoPs
  • 6
    Continents
  • 4K +
    Interconnects

North America

  • Atlanta
  • Boston
  • Chicago
  • Dallas
  • Denver
  • Los Angeles
  • Mexico City
  • Miami
  • New York
  • Philadelphia
  • Puebla
  • Queretaro
  • San Jose
  • Seattle
  • Washington D.C.

South America

  • Barranquilla
  • Buenos Aires
  • Lima
  • Medellin
  • Quito
  • Rio De Janeiro
  • Sao Paulo
  • Valparaiso

Europe

  • Amsterdam
  • Copenhagen
  • Frankfurt
  • Helsinki
  • London
  • Madrid
  • Marseille
  • Milan
  • Paris
  • Riga
  • Stockholm
  • Vienna
  • Warsaw

Asia

  • Bangalore
  • Batam
  • Beijing
  • Chennai
  • Hong Kong
  • Jakarta
  • Mumbai
  • New Delhi
  • Osaka
  • Seoul
  • Shanghai
  • Singapore
  • Taiwan
  • Tokyo

Africa

  • Johannesburg

Oceania

  • Auckland
  • Melbourn
  • Sydney

Middle East

  • Fujairah
  • Muscat

BRINGING SPEED, SCALE AND SECURITY TO ANY WEB CONTENT

Telia CDN is a cloud service provided in partnership with Verizon Digital Media Services (known also as Edgecast) that brings speed, scale and security to any web content, be it a website, web-based service or media streaming. With 55+ Tbps of global network capacity in over 125 locations on 6 continents, hundreds of teraflops of computing power, 3K+ interconnects and 24x7 monitoring, Telia guarantees 100% availability of the CDN.

Telia CDN addresses the realities of today’s internet through its modern architecture and efficient network technologies. Numerous global OTT companies rely on Telia CDN to deliver content to their customers in a secure and extremely scalable manner.

ARCHITECTURE OF THE CDN

CDNs improve performance by shortening the delivery route for communications over the internet. Rather than serving content from a distant origin server, CDNs serve content from an edge server based on physical proximity to the user. The goal is to reduce latency and page-load time. Our CDN has optimised this concept for the modern internet landscape.

Instead of the legacy CDN approach that scatters tens of thousands of small PoPs across the globe, we strategically place Super PoPs with massive computing power and high bandwidth capacity at dense internet exchange points. A Super PoP is a data centre that serves one or more key geographical regions and contains all of the types of edge servers that provide our services: cache network, web acceleration service, streaming services, route servers and our PCI-complaint network. Each of our Super PoPs interconnects with peering and routing partners to achieve faster speeds and higher redundancy than our competition.
Because our CDN is cloud based, it allows you to meet surges in demand without over provisioning your equipment and capacity. By concentrating massive computing capacity and bandwidth, each Super PoP handles enormous traffic spikes without performance degradation, resulting in the best server-to-delivery ratio of any CDN.
When a user requests content (e.g. videos, images, files, etc.) that is not cached within the CDN, the edge server must make a request to the website owner’s origin server to obtain a copy of the content. This “cache-miss” scenario is undesirable because the user loses the performance benefits of a CDN. The highly distributed architecture of legacy CDNs 5 does not work well with highly personalised content, resulting in tens of thousands of cache misses and a severely degraded user experience. In contrast, our architecture improves performance by enabling more requests to be served from the cache (a “cache hit”). Our Super PoPs are engineered for horizontal scalability to enable load balancing at the application layer. Hundreds of powerful servers within each Super PoP work together as one highly efficient infrastructure that stores each object only once, resulting in a larger usable cache. The result: significantly improved cache-hit ratios.
Centralised distribution combined with horizontal scaling also provides greater fault tolerance. Our proprietary design offers redundancy that allows our CDN to withstand DDoS attacks and recover from hardware failures. We always ensure that our CDN runs on 50% capacity on its network, and this is achieved by proactive monitoring of traffic conditions, our open peering policies, peering relationships and real time traffic shaping capabilities.

NETWORK CONNECTIONS AND INTERCONNECTIONS

Our routing and network technologies further improve performance by providing the most efficient transport path.

Our CDN uses Anycast to identify which Super PoP should serve content for any particular user. Anycast is a network addressing and routing methodology that allows multiple Super PoPs to use a single IP address when receiving requests over the internet. Each request uses network hops from a routing table to find the closest Super PoP. This technique eliminates the need for sluggish geo-based DNS look-ups or multiple recursive Domain Name System queries required by legacy CDNs.
Our CDN ensures network resiliency by redirecting traffic away from congested points on the network, such as routers, backbones or down edge servers. Using proprietary self-healing technology, our CDN performs self-diagnostics and automates network failovers instantly and seamlessly.
Our CDN interconnects with more than 3,000 carriers and ISPs to expand our global footprint and ensure that content gets to users with the least possible latency. We continually increase this capacity; over the last 3 years, we have invested more than $190 million and grown our network by over 340 percent.
Our patented caching algorithm ensures the most efficient caching strategy for consistently high cache-hit ratios. In addition, our dynamic acceleration technology determines optimal TCP (Transmission Control Protocol) congestion window size to find the optimal balance between performance and stability.
Instead of a one-size-fits-all solution for delivery and acceleration, different customisable delivery strategies are applied for different types of objects, e.g., videos, large files, small objects, etc.
We are continually working to incorporate new technologies and address emerging challenges with our commitment to a 12-18 month evolution cycle. Our entire network has been completely revamped multiple times and is currently in its seventh generation. We continually deploy the latest hardware to deliver better performance.

ADVANCED FEATURES

CDN has advanced features that provide the means to optimise and secure content delivery.

Origin Shield establishes an additional gateway between the origin server, edge servers and customer devices in order to protect the origin from: Direct to origin denial of service attacks - some DDoS attacks can be designed to directly target the origin server using its IP address. With Origin Shield, specific IP addresses can be whitelisted to ensure only legitimate traffic from approved sources reaches the origin. Spikes in traffic reaching the origin e.g. dynamic content requests. The additional gateway aggregates all requests to the origin and provides an additional layer of caching. It also applies TCP optimisation and persistent connections to sites with a lot of dynamic content. Origin Shield is enabled by default for TMS platform origin servers. It is highly recommended for all media delivery scenarios as it significantly reduces the load on origin and increases the cache efficiency.
Configuration of rules to modify components of HTTP requests and responses in the CDN based on different criteria in order to: • Reduce bandwidth costs by specifying “origin pull” update intervals for each URL or object. • Reduce load on origin servers by offloading the processing of existing business rules. • Improve content security by blocking hotlinking and other inline leeching of content. Provides control of URL (method/host/path/file/querystring) and headers (cookies, time-tolive [TTLs], response code, etc.). Geo-location rules include configuring access based on geographical locations. For TMS customers rules are created by TMS administrators. Video content delivery is optimised by default in the platform but may be adjusted upon customer request.
In order to deliver via HTTPS, the streaming domain has to be listed on an SSL certificate that is deployed on the CDN edge servers. SSL certificates are provided by default for TMS customers.
A mechanism to create a per user unique hash to secure content on the CDN platform thus preventing unauthorised access to HTTP assets. Primarily used to prevent hot linking to protected documents and media streams. The TMS platform adds tokens to media asset streams if requested to do so. CDN token check is configured according to the customer’s requirements.
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