We'll close out the chapter with a few checklists. These are simple questions for which there's no one correct answer. Some answers will remain the same throughout the lifetime of our software. For example, our business model will, hopefully, 'not change often. Others depend on the current state of things, and that's what these lists are for. We can come back to them again and again, anytime something changes. These could be requirements, users, new deployments, or changes to the development environment. These questions are nothing more than subtle reminders of the factors that influence scalable JavaScript applications. If reading them results in more questions than answers, then they've served their purpose.