Communications is very important. We will need terabit-level communication between Earth and Mars, which means a tight-beam laser system and relays, because sometimes Mars is on the other side of the Sun.
"We're going to need terabit level communication between Earth and Mars"
"The difficulty of communicating with Mars varies tremendously, with the worst case being when it is on the opposite side of the Sun from Earth. For terabit-level bandwidth, the best option is probably a series of laser communication satellites at varying distances from the Sun to minimize path length for any given Earth-Mars position."
"This is just a very basic first step. Earth and Mars will ultimately need >petabit/sec connectivity."
"No way to solve speed of light latency, but we can solve for super high bandwidth"
"for communications on Mars uh we'll be using a version of Starlink to provide uh internet on"