Once work is planned and assigned, you can sit down and start coding. As the developer, you need to remember all of the previous levels of the hierarchy as you introduce new code into your infrastructure. Often, as an SRE, your work will be looked to as a model for what the rest of your developer teams should be doing. If you skimp on a level, you may find the teams and developers you work with also skimping on it because of your example and hypocrisy.
A simple checklist for new software that you are writing based on our hierarchy framework is as follows: