Tether

The Tether is a space elevator that both connects the Winged Moon to Cybertron and serves as its maintenance hub.

Fiction

2019 IDW continuity

After Brainstorm had been murdered, Bumblebee instead took Rubble to the Tether so he could learn about engineering from Wheeljack. After Wheeljack explained the Winged Moon (and skitters) to the newborn, he employed him for the day at the engineering complex. That evening, the engineers in the Tether activated the Winged Moon for a harvest. The World In Your Eyes Part Two