I asked a question to myself: "Why has Google been incredibly successful in defending and growing its core as well as introducing non-core disruptive innovations?". To answer my own question I ran down Google's innovation strategy through Clayton Christensen's concepts and framework as described in his book " Seeing What's Next ". Here is the analysis: Google's latest disruptive innovation is the introduction of free GPS on the Android phone. This has grave implications for Garmin. To put this innovation in the context it is a "sword and shield" style entrant strategy to beat an incumbent by serving the "overshot customers". The overshot customers are the ones who would stop paying for further improvements in performance that historically had merited attractive price premium. Google used its asymmetric skills and motivation - Android OS, mapping data, and no direct revenue expectations - as a shield to enter into the "GPS M