BBC director-general George Entwistle has unveiled his vision for "a more creative" corporation as he announced a slimmed-down management structure and the departure of one of his rivals for the top job.
Mr Entwistle, who started work on Monday, told staff the organisation had settled "for less than we should" too often and declared the end of "fortress BBC".
He used a speech to staff to announce the formation of a new Management Board of 12 people replacing the 25-strong BBC Direction Group and announced the closure of the Operations division which was headed up by Caroline Thomson.
Ms Thomson, who will leave at the end of this month after her post was axed, has been a controversial figure in the past with her expenses claims coming under scrutiny. The new director-general said his changes would turn the BBC into "a more creative organisation, led and managed in a radically simplified way".
He added: "I intend to change the way we're led to put the emphasis where it belongs - on creative people doing creative things; on our audiences and the exceptional quality of work they deserve".
Speaking to staff on the BBC's internal video channel, he said: "Though our best is often brilliant - in some of our output, we do settle for less than we should. So I believe we owe our audiences a determined effort to raise the creative quality of what we do."
He said he inherited "an organisation in robust health" and praised his "remarkable" predecessor Mark Thompson who has stepped down after eight years in charge. Mr Entwistle, a former director of BBC Vision and ex-editor of Newsnight, said his position as an "internal candidate" meant he knew "what holds us back - the things we need to stop".
Among the problems he listed were "the silos, internal competition, the duplication, the jockeying for position. And at its worst, the leaking, the briefing against other people and other departments - and the sheer waste of energy and money that results".
He praised the coverage of the London 2012 Games and said the BBC had to use "the Olympics formula and make it work again" on events including the 50th anniversary of Doctor Who, Glastonbury and Wimbledon.
He also said plans were under way to cover the 100th anniversary of the start of the First World War, the World Cup, the Winter Olympics and the Commonwealth Games.