AB testing shows zero respect to your customers. It is the equivalent of testing your theories on lab rats. Instead try to improve the customer experience, make better products, improve customer service.
>Instead try to improve the customer experience AB testing can be (although isn't always) used to improve the customer experience. Assuming you know exactly what will make the customer experience best without actually testing it can also lead to a worse experience.
For that you usually hire a market research company or do what they will do: take an interviewer, two cameras (one front-face, one top-hands) and hire an as-diverse-as-possible pool of test candidates that you then put through whatever workflow optimization you want to do. Then afterwards, you interview them - side benefit, you can get really interesting general side knowledge that you'd never gain from a dumbass A/B scheme: is your font style/color scheme legible, can the site be used by colorblind people, are there stock photo choices that give off stereotypical vibes...
It's real fun and a worthwhile experience for everyone involved.