As someone who are involved half a dozen projects, high level architecture diagrams are extremely useful. This is especially true when meeting with stakeholders

As someone who are involved half a dozen projects, high level architecture diagrams are extremely useful. This is especially true when meeting with stakeholders in other teams and explaining what we need to do to accommodate their requests, and also when onboarding new resources. The way I use diagrams, they should not be code as that is just added complexity without any benefit