One of the advantages of bread loaf-sized nanosatellites is their potential to act as a swarm that can equal the power of a single larger satellite, but with more flexibility and at lower cost. Deep Space Industries (DSI) has taken a major step in that direction in a successful test involving two autonomous Canadian satellites, which carried out the first orbital maneuver without human supervision.
Satellite formation flying isn't new. In fact, the first example was on December 15, 1965, when Gemini VI and VII rendezvoused in low Earth orbit.