Bill Gates announced that he would be transitioning from full-time work at Microsoft to part-time work and full-time work at the Bill & Melinda Gates Foundation, which was established in 2000. He gradually transferred his duties to Ray Ozzie and Craig Mundie. He stepped down as chairman of Microsoft in February 2014 and assumed a new post as technology adviser to support the newly appointed CEO Satya Nadella. Gates is one of the best-known entrepreneurs of the personal computer revolution. He has been criticized for his business tactics, which have been considered anti-competitive. This opinion has been upheld by numerous court rulings.
Bill & Melinda Gates Foundation spend more of their budgets on public health than on wars, that the foundation has donated at least $70 million to help improve nutrition and agriculture in Africa, in addition to its disease-related initiatives and that it is studying ways to improve the delivery of health care in Africa. Both insiders and external critics have suggested that there is too much deference to Bill Gates's personal views within the Gates Foundation, insufficient internal debate, and pervasive "group think." Critics also complain that Gates Foundation grants are often awarded based on social connections and ideological allegiances rather than based on formal