<p> </p><p>It is understood that there are renewed question marks over the long term future of Ministry of Defence (MoD) chief digital and information officer (CDIO) Mike Stone.</p><p>There have been rumours for some time that Stone’s position – perhaps by choice – was under question. But he has frequently denied that he is moving on, saying he was committed to the job. He gave a series of interviews recently connected to the MoD's early use of Microsoft cloud services.</p><p>However, at today’s techUK Information Systems and Services briefing, Stone’s likely departure was referred to by both attendees and speakers at the event. It has been suggested previously he will be stepping down when his contract ends in the first half of next year, though this has not been confirmed by the MoD. Stone took up his role in May 2014.</p><p>One supplier to the MoD said it would be disappointed if Stone was moving on, describing him as "a disruptor", not only to the MoD, but also to the ministry's relationships with its more traditional suppliers.</p><p>The MoD has been contacted for comment.</p><strong>Update: </strong>It is understood that Stone resigned on Friday and that the interim CDIO will be Ivan Hooper, who is Defence ISS director of operations. The information has yet to be confirmed by the Ministry of Defence.