All in Debian Networking
Bridges are internal switches for Linux systems. They have a variety of uses.
VLANs are virtual networks that are used to separate traffic on a single physical network.
Bonds are groups of physical interfaces grouped into one logical interface. These interfaces can load-balance and fail over, and are integral to keeping high-priority systems up, even during network maintenance.
Debian networking is simple and fast. Here's a quick guide.