What impact has it had on the continent's tech startup scene? Tamasin Ford speaks to Bosun Tijani, founder of the CcHub in Lagos, about why tech hubs have been so important in driving innovation in recent years, and Ghanaian entrepreneur Charles Ofori Antipem who discusses what tech hubs can do better. The BBC's Massa Kanneh reports from Liberia on the challenges affecting tech hubs in Africa's less developed countries. (Photo: An IT professional in a server room, Credit: Getty Images)