0. Content Delivery Network Deutsche Telekom ICSS

1. 19
Historical overview
Main challenge: How to distribute content in high quality over the Internet cost-effectively?
• Traditional “Best-effort” model: Single web-server serving the requests
Quality problems:
• High latency geographical distance vs „layer 3” distance
• Lack of georgaphical diversity content is hosted at a single location no protection against disaster
• Reduced scalability total load is concentrated to the central location geographical load-sharing/load-balancing is not possible.

2. 19
Historical overview
Possible solution: Intelligent dynamic content distribution
• Second step bringing content closer to the user through content replication and web caching technologies
• First step centralized load balancing server farms to overcome server side bottlenecks
- latency problem still not solved

3. Content Delivery Network.19
Historical overview
Content Delivery Network.
Possible solution: Intelligent dynamic content distribution
A content delivery network (CDN) is an interconnected system of computers over the Internet that provides Web content rapidly to numerous users by duplicating the content on multiple serves and directing it to users from the nearest/most optimal CDN location.
• Second step bringing content closer to the user through content replication and web caching technologies

4. Technical benefits: - Fast Delivery - High availability19
Technical benefits:
- Fast Delivery
- High availability
- Highly scalable (no capacity issues)
- DDOS protection
1st step: the CDN receives your content
2nd step: your content is distributed over the CDN
In case of a network outage
the content is still served from another CDN location.
DDOS (Distributed Denial of Service) attacks are not successful because the load they generate is efficiently shared over the CDN platform.
3rd step: customer request
is served from the nearest CDN PoP.
If there are high number of concurent requests
global load-balancing ensures that all requests are served by local resources very quickly.

5. Cost savings You can SAVE: Cost of Internet access Server capacity19
Cost savings
Multiple thousands of requests can be served by sending your content to the CDN platform ONLY ONCE
You can SAVE:
Cost of Internet access
Server capacity
Colocation cost

6. Special capacity requirements
Ideal Traffic Profile
Content-owners having occasional high capacity/bandwidth demand can outsource the additional load to a Content Delivery Network on a cost effective way.
Special capacity requirements
Live sport events
Press/media conferences/events
Software releases
Content published temporarily
Outsourcing to CDN

7. Supported traffic types
Dynamic Caching
HTTP Large File Downloads/Video Delivery
E-learning, gaming, gambling, other application cashing, ..
Dynamic Site acceleration
Video (progressive downloads)
Music (progressive downloads)
Software (including games)
Other large object downloads
DT ICSS
Content
Delivery
Solution
HTTP Small object or Whole Site Delivery
Streaming
Images
Flash animated files
Social Media
High-Traffic & Large Library Web Sites
Online Advertising
HTTPS content
Live and on-demand music and radio stations
Live and on-demand video traffic
Windows Media Streaming,
Flash Media Streaming
Windows Smooth Streaming,
iPhone and iPad Streaming

8. Detailed statistics are available about your traffic including geography, hits, hosts, browsers, cache hit ratio, etc. 8

9. Industry standard billing models
95 Percentile billing
Data Transfer Model
95 percentile model
Similar calculation to IP Transit industry standard
Measured in Mbps
Ideal for customers with average traffic profile.
Data transfer based model – „you pay as you go”
Measured in Gbyte
Ideal for customers with non-standard/peak traffic profile
SWC 9

10. CDN solution is benefitial for All!
Content owner
Enduser
Better enduser experience
Can serve the customer a higher quality
Backbone providers
Reduced backbone load 10

11. Blogs, News, Social Networks
Who uses our CDN solution?
Enterprise
Media & Entertainment
Blogs, News, Social Networks
Rich Media and Video
Enterprise
Blogs, News, Social Ntwk

12. Thank you!