"A graphic representation of data abstracted from banks of every computer in the human system. Unthinkable complexity. Lines of light ranged in the nonspace of the mind,clusters and constellations of data. Like city lights, receding..."
—Neuromancer, William Gibson
The Mesh is an internet-like technology that functions as a major connection between locations in the Golden Branch sector. Strati like Mako Trig can connect with the Mesh on a deeper level, entering a Matrix-like augmented reality where their actions can impact the information and programs they interact with.
Most long-range communication relies on the Mesh to function, though some characters (like AuDy and members of the Iron Choir like Sister Rust) choose not to connect with it for personal and/or ideological reasons.