BBC News Writes:
Bill Gates ends his full-time job at Microsoft on a Friday afternoon and the company opens for business after the weekend as if nothing has changed.
At least, that is how Gates' successors want to play it.
The 'transition', as it is called inside the company, was announced two years ago.
On the face of it, the only difference after 27 June will be that Gates will be non-executive chairman rather than executive chairman, spending just one day a week on Microsoft business.