WiFiRanger has been around a long time providing connectivity solutions for RVs and boats. Their new platform is called Converge, and is a mix of different components that can provide a whole solution for internet aboard.
Victron has had a lot of impressive connectivity products, but one area they have had challenges with is in getting all of that data onto NMEA 2000. In their recent v2.40 release, that has changed for the better.
NMEA 2000 networks are part of any connected boat, and can be problematic by nature of their design. Troubleshooting an N2K network can be done very easily and cheaply, or you can use more advanced tools.
Servers are more common on boats today than ever before. Having some sort of system to run SignalK, a dedicated alerting system, or some other service has become just as integral as having a chart plotter or VHF radio.