One of my least favourite expressions, and one which seems to be everywhere in business (and the Civil Service) these days.
I’ve long imagined this to be a mishearing of the word “apace” which has become so common as to be generally accepted, but I’ve really no idea whether that’s true. Does anyone know? It seems to be a novel enough usage that it hasn’t made its way into any of the major dictionaries yet as a synonym for “quickly”.