I’ve been working for over 20 years in the field of “developer experience,” where we help developers be more effective, efficient, and happy, by improving tools, systems, and processes. I have been intimately involved in designing key aspects of the developer experience at Google and LinkedIn, have been very involved with the research community in this space, and I’m constantly in touch with developer experience leaders at every major tech company. I’d like to spell out for you the fundamental principles of what makes a great developer experience—the most important things to understand in the space. I’m only going to