Technically, those 100+ Gbps fiber LAN/WAN connections used in data centers are also Ethernet, just not twisted pair.
That said recently I was in a retail store and saw “Cat8” cables for sale that advertised support for 40 Gbps copper ethernet! I wonder if any hardware to support that will ever be released. It is a real standard, approved way back in 2016: https://en.wikipedia.org/wiki/100_Gigabit_Ethernet#40GBASE-T
Those cables are hard to terminate properly. There’s an outer grounding sheath that needs to be connected up at both ends. Except for short connections, I find it easier/cheaper to use fiber.
Technically, those 100+ Gbps fiber LAN/WAN connections used in data centers are also Ethernet, just not twisted pair.
That said recently I was in a retail store and saw “Cat8” cables for sale that advertised support for 40 Gbps copper ethernet! I wonder if any hardware to support that will ever be released. It is a real standard, approved way back in 2016: https://en.wikipedia.org/wiki/100_Gigabit_Ethernet#40GBASE-T
Those cables are hard to terminate properly. There’s an outer grounding sheath that needs to be connected up at both ends. Except for short connections, I find it easier/cheaper to use fiber.