Building a product isn't that hard. But you also want: - A product upon which you can build on more features while maintaining 100% uptime and remain mostly b

Building a product isn't that hard. But you also want: - A product upon which you can build on more features while maintaining 100% uptime and remain mostly bug-free - Build up ad infrastructure with real-time data and bidding - Instrument everything - Consume all that instrumentation to make product/business decisions - Feed all that instrumentation into your ad infrastructure - Optimize all of the above - Have all of the above secure Or you could do none of that, but then you won't be the next Facebook.