I have been browsing websites that offer Shared & Dedicated Server Solutions so you can host webpages, video chat rooms etc these machines look amazing and very complex but what i would like to know is what type of Broadband do they run on or is it even broadband, i have looked up ADSL & SDSL but surely these would not have upload and download capacity to run these rooms with out any lag considering the high volumes of customers using them all at the same time, so can someone tell me what exactly do they use to meet their needs. 