In Scrum, the product owner and the ScrumMaster are supposed to drive sustainable development. But there's a third force missing from the formula: the health of the code itself. We often forget that our code is also a member of our team, and we have to be concerned about its health and well-being as much as any other team member. That means using practices to develop good code from the beginning.

One of the most important things to pay attention to when writing software is how we name our symbols. Data and behavior should be named in a way that represents the essence of what we're trying to do. Naming affects understandability and reflects code quality, so use names that clearly communicate your intentions, and refactor those names when your intentions change.

Code can express what we want to accomplish, but it’s a little more difficult to express why we’re doing something in the first place. The people who maintain code are often not those who originally wrote it, so documenting why helps set a context and gives clues as to what the author was thinking when they came up with a particular design, making developers' jobs easier.

Just as you should not take out a financial loan without having a plan to pay it back, you should also have a plan when incurring technical debt. The most important thing is to have transparency—adequate tracking and visibility of the debt. Armed with the knowledge of these pending tasks, the team can devise a strategy for when and how to “pay off” technical debt.