Jim Morrison discusses Quantcast’ pixel-serving architecture and how ThousandEyes plays a vital part in monitoring an Internet-centric environment.

1. Globally
Distributed Pixel
Serving
17 Nov 2016
Jim Morrison
Sr Manager, Edge Services

2. Quantcast (QC)
Quantcast Measure Quantcast Advertise
2
Measure provides free direct
audience measurement
for a website including traffic,
demographics, interests, and
more.
Advertise is a programmatic
advertising suite that leverages
the data collected through
Measure to enable marketers
and publishers to buy and sell
the most effective targeted
advertising.

3. Contents
Quantcast Measure Pixel Serving Using ThousandEyes Questions?
Product Serving Pixels
Aggregating Data
Quantcast Needs

4. 4

7. Pixel Serving

10. We route users to the nearest site by IP
geolocation.
DNS based load balancing across
machines
Geo-based DNS
12 sites around the world, using geo-dns + anycast
Each site announces its main IP range and
backup ranges for other sites with longer
prefixes.
Simple switches BGP peer with a single tier
2 ISP
Anycast
Pixel Serving
10

12. UI allows us to go back in time easily to find
problems
Using ThousandEyes: Why
Easy UI
Points calculator makes it easy to evaluate
the cost of monitoring
Cost transparency
12

13. Simple example

14. Monitoring needed: User experience
14

15. Strict SLA

16. Less strict SLA

17. Monitoring needed: QC experience
17

18. Questions?

19. Thank You! We’re hiring.
jmorrison@quantcast.com