From "Crossing the Chasm" to "Digital Transformation"- always worth reading Geoffrey Moore.

Read his article but the options are not necessarily as brutal. Your legacy infrastructure need not be thrown away. Major insurance companies have gratefully found this out with 360Globalnet.

Won't be an option every time but if you don't want to "throw away the baby with the bathwater"  start there.

And he's right about this- no time for three year plans. It is, to quote him, a ROE decision!

Return on Existence