Great talk by Ross Chapman.

UX Design is the qualitative aspect of web design that can't necessarily be measured in numbers or ROI.

First realization was to design for mobile first and scale up to desktop.
Rapid prototyping with Marvel. Design in real time while the project is developing

Usability testing face to face requires quite a bit of planning.
Can get better feedback and actually see the facial expressions

Interview internal teams
Get teams involved early on

Consistent style guides. Make a pattern library.
cuts down on time

Share knowledge by blogging

Good tools: 
peek.usertesting.com
uxrecipe.github.io
uxcheck.co

Design is a business strategy