The first authoritative, all-in-one decision-maker's guide to SaaS, SOA, mashups, Web 2.0, and cloud computing- and what they'll mean to IT--Reveals the massive disruption coming to IT and enterprise architecture, showing IT leadership how to prepare for it -- and take full advantage of it.-Shows how to fully leverage IT resources and data 'beyond the company gates,' while still keeping the barbarians at bay.-By David Linthicum, one of the world's most respected experts in cloud computing, SOA, and enterprise architecture. Massive, disruptive change is coming to IT, as Software as a Service (Saas), SOA, mashups, Web 2.0, and cloud computing truly come of age. This book is a coherent, comprehensive, and authoritative guide to what it all means. Writing for IT executives, architects, and technical professionals alike, worldrenowned expert David Linthicum previews the coming Enterprise Architecture Disruption, showing how to prepare for it - and how to take maximum advantage of it. Linthicum explains why the days of managing IT organizations as private fortresses will rapidly disappear, as IT inevitably becomes a global community. He demonstrates how to run IT when critical elements of customer, product, and business data and processes are populated by sources beyond the firewall - and how to use all that information to deliver real-time answers about everything from an individual customer's credit to the location of a specific cargo container. Linthicum offers a clear-eyed assessment of the challenges associated with this new world - and offers a six step program for getting there with maximum ROI and minimum risk.