Thunderbolt is an input/output technology introduced five years ago by apple, famous for supporting high-resolution displays and high-performance data devices with a single port.
its main characteristics are flexibility, speed and simplicity. this technology gives you two channels on the same connector and each channel has a data transfer speed of 10 gb/s in both directions.
thunderbolt is one method of connecting a display to a computer, but not a very popular one. the most appreciated are hdmi, dvi, vga and displayport.
today, most of the vga and dvi ports were replaced with displayport. hdmi is used for flat screen tvs and smart tvs because you can connect that port to different extensions like blu-ray players, game consoles, computers and much more.