Ask HN: What Paid Services Do You Use For Your Startup?

I appreciated the previous posts last year[1] and the year before[2] where people listed the services they paid for to run their startups. I think with more than another year gone past, it's time to ask again: what services does your startup use and pay for? What's changed since last time and why? I appreciate your responses. [1] http://news.ycombinator.com/item?id=1499186 [2] http://news.ycombinator.com/item?id=545229