Utilize the input text as a context reference, choose the right relationship between 'Hotmail' and 'Microsoft' from the options.
Options: director/manager, owner of, developer, distributed by

He had worked for Microsoft (NasdaqGS: MSFT - news ) for over 20 years, specialising in more recent years in the sale and marketing of online products MSN Messenger, Hotmail and Bing.
developer