[shafyy]

I do think that an A/B testing platform can be a great business, and making any business work is for sure an achievement.

I just had the impression that YC tries to back more "ambitious" or "important" businesses, but may be I'm wrong about that.

[kipply]

ambition or "importance" don't always manifest in the early stages of a startup (they probably usually don't). Shopify started as a snowboard selling company and I'm sure that the founders here pitched YC a larger vision that was appreciated.