Whiteboard coding is a common interview technique used in the tech industry, where candidates solve programming problems on a whiteboard in front of interviewers. This method allows interviewers to assess a candidate's problem-solving skills, coding ability, and thought process in real-time, without the aid of a computer. During a whiteboard coding session, candidates are typically given a problem to solve and must explain their reasoning as they work through it. This approach helps interviewers evaluate not only the final solution but also how candidates communicate their ideas and handle challenges during the coding process.