I think you're talking about conversion optimization rather than pure marketing.
Tracking numbers for a mobile app is fruitless if you don't have a way to get tons of people to use it in the first place. A/B testing design, colors etc of a mobile app is only useful once you users.
Similarly, for an e-commerce site, it doesn't make sense to A/B test different things like price if you got a measly number of visitors.
Now, how is one supposed to get all those visitors/customers/users in the first place, so we can then tinker/test the various variables? That is marketing, and a lot of it isn't "hacker" oriented. It's actually messy, and geared more towards people who are sales oriented, even some of SEO. SEO is actually one of the few remaining hacker-friendly methods of marketing.
Tracking numbers for a mobile app is fruitless if you don't have a way to get tons of people to use it in the first place. A/B testing design, colors etc of a mobile app is only useful once you users.
Similarly, for an e-commerce site, it doesn't make sense to A/B test different things like price if you got a measly number of visitors.
Now, how is one supposed to get all those visitors/customers/users in the first place, so we can then tinker/test the various variables? That is marketing, and a lot of it isn't "hacker" oriented. It's actually messy, and geared more towards people who are sales oriented, even some of SEO. SEO is actually one of the few remaining hacker-friendly methods of marketing.