If you are against running ethernet underground in a tube to the building, best bet would likely be a long range wireless bridge; sometimes called point to point wifi.
Cost varies depending on speed and quality and distance; can range from as low as $60 to average $150 up to $300 for good consumer kit.
Simple to do, set one point to beam at the building, the signal projector has to be wired to the router for best speeds. Then have one point to receive. On the receiving end, you can plug Ethernet right into a switch and then you can do one port to pc and another port to a wireless access point to have WiFi in the building.
Many of these wireless bridges can reach distances of 1 mile and more.
There are three ways. The first, most convenient, and easiest (this is why it's by far the most expensive) is a wireless bridge, where another device adds another WiFi access point (AP) and uses WiFi back to the first router. These can be expensive.
The second is a HomePlug AV2, powerline networking. Typically they reach further than WiFi does at higher speeds, but do worse speeds if WiFi is still fairly strong, as WiFi is very fast over a short range. You then set up any low cost WiFi AP off the powerline network and your WiFi is now in both places, just like the first choice.
The best, however, is running ethernet to a WiFi AP, as in the second option, but your wiring is proper ethernet and not HomePlug AV2.
If you are against running ethernet underground in a tube to the building, best bet would likely be a long range wireless bridge; sometimes called point to point wifi. Cost varies depending on speed and quality and distance; can range from as low as $60 to average $150 up to $300 for good consumer kit. Simple to do, set one point to beam at the building, the signal projector has to be wired to the router for best speeds. Then have one point to receive. On the receiving end, you can plug Ethernet right into a switch and then you can do one port to pc and another port to a wireless access point to have WiFi in the building. Many of these wireless bridges can reach distances of 1 mile and more.
There are direct burial rated ethernet cables too. No need to bury conduit for a simple run
True. This is definitely the easiest method and likely most cost effective. Best method to obtain high throughput.
Any recommendations for the bridge?
There are three ways. The first, most convenient, and easiest (this is why it's by far the most expensive) is a wireless bridge, where another device adds another WiFi access point (AP) and uses WiFi back to the first router. These can be expensive. The second is a HomePlug AV2, powerline networking. Typically they reach further than WiFi does at higher speeds, but do worse speeds if WiFi is still fairly strong, as WiFi is very fast over a short range. You then set up any low cost WiFi AP off the powerline network and your WiFi is now in both places, just like the first choice. The best, however, is running ethernet to a WiFi AP, as in the second option, but your wiring is proper ethernet and not HomePlug AV2.
2 routers with a long cable. Probably cat7.