Mobile app development is the focus of the final part of Cliff Saran’s interview with Werner Vogels, CTO of Amazon. Vogels says that on iPhone and Android devices, the apps are pretty innovative, yet they are being produced at break-neck speed. Developers are not building services themselves. They consume external services. Small lightweight apps running on your devices connect to cloud-based services, pulling together location awareness and context-based information. This approach to use cloud-based web services will become the building blocks of future enterprise applications.