at the right time to bring new innovative services to customers  and partners with greater speed and at less cost. How do companies decide on the best fitting cloud model for their business strategies? To begin their cloud journeys,  companies may select a few starting points. An insurance company wants to add a new service for a dedicated team of independent agents. A lot of personal customer information is stored in the application so the company needs to maintain a high level of security and  control. They also expect to ramp up this new service very  quickly and want to make sure they have the capacity both for ongoing testing and production. The private IaaS model  provides the company with predictability and scalability  while at the same time minimizing security risk. A leading retail bank needs to evaluate new technologies and  solution platforms without investing in costly IT architecture.  The testing environment for the new initiative was migrated to  the secure public cloud based on a combination of the private  IaaS service and the PaaS environment. The team needs to  test its application for scalability with an expected one million  concurrent users. The extra capacity from the secure public  IaaS shortened total build times by enabling testing operations  to leverage a highly-scalable, secure, and well-managed infrastructure. The business gets to market faster while keeping  budgetary constraints under control. These materials are the copyright of John Wiley & Sons, Inc. and any  dissemination, distribution, or unauthorized use is strictly prohibited. Public IaaS for development and test Private IaaS for development and test Getting Started with IaaS and PaaS  Chapter 6: Starting Your Cloud Journey 57