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 countries on the eastern coast of Africa. The Kenyan government has started a similar project named TEAMS (The East Africa Marine System), with the collaboration of Etisalat. A third project, SEACOM, is completely African-owned. SEACOM bandwidth has already been sold to several customers, including the South African network TENET. In South Africa, the SANReN network, with a 500 Gbit/s core, has been designed to become the fastest academic network in the world; the universities of Witwatersrand and Johannesburg are already using a bandwidth of 10 Gbit/s provided by this network. Efforts to connect previously disconnected parts of the world have