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The IoD will not be appointing a new head of e-business to fill his shoes. Instead, the institute's focus will be concentrated on its iod.com team under the leadership of Ruth Lea, head of the policy department.
"There will be no direct replacement," said Norton. "iod.com will be building up over the next few months. It will be concentrating on creating new e-members. We have over 50,000 physical members and the biggest part of their membership fee covers access to buildings and facilities - an entitlement many do not take-up.
"An e-member will have all the other benefits such as purchasing deals, information, advice and training."
Norton's job as head of e-business was now "mission accomplished", he said, adding: "It was about educating the members - many of which are SMEs - that e-business is not something to be frightened about.
"We have debunked that fear. SMEs are now focusing more on the business issues and what the tools can do for their business rather than worrying about the technology itself."
He added: "It's been a great two years evangelising, but now our community has got the message."