LONDON, July 21 (Reuters) - Vodafone said the bosses of its four biggest European markets would report directly to chief Vittorio Colao to speed up decision making in fast-changing markets, after it decided to scrap its European regional management structure.
Refer to the input text as context and select the correct relationship between 'Vittorio Colao' and 'Vodafone' from the available options.
Options: developer, platform, operator, employer