Johannesburg Johannesburg Johannesburg (; ; also known as Jozi, Joburg, and eGoli) is the largest city in South Africa and one of the 50 largest urban areas in the world. It is the provincial capital and largest city of Gauteng, which is the wealthiest province in South Africa. While Johannesburg is not one of South Africa's three capital cities, it is the seat of the Constitutional Court. The city is located in the mineral-rich Witwatersrand range of hills and is the centre of large-scale gold and diamond trade. The metropolis is an alpha global city as listed by the Globalization and
Internet in Africa overall amount of data traffic at Internet exchange points (IXPs). On African IXPs, traffic can be measured in kbit/s (kilobits per second) or Mbit/s (megabits per second), while in the rest of the world it is typically in the order of magnitude of Gbit/s (gigabits per second). The main IXP of Johannesburg, JINX (which is also the largest IXP in Africa) has about 6.5 Gbit/s traffic (in Sep 2012). IXP traffic, anyway, is only a measure of local network traffic (mainly e-mail), while most of African generated traffic is routed through other continents, and most Web content created in Africa