Which is the most developed city in East-Africa?

The Eastern African region has about 15 countries.

The top 5 biggest and largest metropolitan cities are Nairobi ( Kenya), Dar-es-Salaam ( Tanzania), Kampala ( Uganda), Addis-Ababa ( Ethiopia), and Mombasa ( Kenya).

The most developed city is without a question, Nairobi, Kenya. Nairobi, Kenya

Apart from Johannesburg & Cape Town in South Africa, Cairo ( Egypt) and (Lagos, Nigeria), Nairobi is the fifth wealthiest city in Africa.

As far as technology is concerned, Nairobi beats any African city. It is a hub of tech innovation on the continent. They even beat South Africa in this sector.