The chief executive who made Boston-based Communispace one of the pioneers in helping big companies build and manage online customer communities announced that she’s handing over the reins.

As of March, Diane Hessan will become chairman, and London-based Charles Trevail, a founder of a company that merged with Communispace in 2012, will be CEO. Trevail plans to move to Boston next year.

Hessan joined the company in 1999, a few years after writing the book “Customer Centered Growth.”

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Communispace was acquired by the advertising and marketing giant Omnicom in 2011; it has more than 500 employees around the world. Headquarters are in the Atlantic Wharf complex near South Station.

To read the full post on the Globe’s Innovation Economy blog, please click here.