This major report published by the International Telecommunications Union captures the level of ICT developments in 175 economies worldwide and compares progress since the year 2014. It includes ICT Development Index (IDI). The IDI is a standard tool that governments, operators, development agencies, researchers and others can use to measure the digital divide and compare ICT performance within and across countries. It is based on 11 ICT indicators, grouped in three clusters: access, use and skills.
The website provides free access to most of the data.