Less than two-and-a-half years since its launch with promises of revolutionising the CAD market, Revit has been swallowed up by giant Autodesk. The US company, whose name was a shortened form of 'revitalise', looked as if it would not be able to overcome the hurdle of attracting sufficient users while its system was being developed. However, Autodesk must have considered Revit a threat (only a few months ago, a senior Revit representative was boasting that Autodesk would have disappeared within five years) or see considerable potential for it, since it has paid a hefty price - -133 million. It claims that Revit will complement its existing portfolio, being employed on parametric design and construction projects using integrated building models.Many industry observers think integrated building models will not be taken up for many years, if at all. And they question how compatible Revit is with other Autodesk packages. Either Autodesk knows something they don't - or it has acted very oddly.