The material is published by EY and explained "a global telecommunications study".

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The 2017 global telecommunications study has been conducted by EY to monitor and evaluate the evolving views of leaders across the global telecommunications industry. This latest survey forms part of EY’s ongoing series of global telecommunications studies. Based on in-depth conversations with industry leaders worldwide, the resulting insights help us to assess the current state and future state of this rapidly changing sector. Our 2017 survey drills down into perspectives from the industry’s CIO and CTO community in order to explore the role of IT and networks and to examine how this is supporting long-term digital transformation. We conducted 39 in-depth interviews with participants from 36 organizations, supported by insights and analysis from EY’s sector professionals and secondary research sources. The 36 organizations taking part this year account for annual revenue of US$421 billion and an aggregate market capitalization of US$603 billion.