[JustARandomGuy]

A pretty insightful look at how Google thinks about its ads - I was surprised by the System Challenges slide - it looks as if they’re having hardware concerns about the Ads fleet? I wonder if the Ads software inflicts more “stress” on its machines than a regular workload such as gmail, search, etc.

[ralusek]

My understanding is that everything ads related has a completely different standard for performance because so much of it happens with real time bidding for ad space in the same window of time that a user is being served a (likely cached) webpage.

[DelightOne]

Caching and bidding might be why Google tries to correct users’ searches.

[alright2565]

This is also a 2008 document, at a much younger Google.