The outer arc — craft
The bowl of the "D" is a single confident curve. It stands for engineering craft: complete, rounded, nothing left rough.
The inner arc — iteration
A second arc nests inside the first. It signals iteration and depth: shipping in layers, refining each release toward something better.
The spine — foundation
The vertical bar closes the "D" and grounds it. It represents the stable foundation behind every delivery: reliable, dependable, always upright.