[aet]

"Analytics is often the single largest infrastructure expense for a company." I'm interested in seeing some supporting evidence. Listed references do not refer to any study or real evidence. This may be true for companies that entire strategy is analytics or ad-based. (See Deloitte 2014 CIO survey -- lots of companies not even doing analytics or feel they are not spending enough on analytics.)

[sskates]

Sorry, this is mostly anecdotal. I've seen it quite a few times myself. Many teams that have tried to track their data at full volume on mobile with existing providers end up paying more for analytics than any other piece of their stack, and so end up doing things like sampling down their data. Would love to hear other people's experiences with mobile infrastructure.