How then do you prioritize the migration of applications to the cloud? To understand what applications should be moved, when, and how, it’s important to create a wellattributed catalog of applications managed by IT. Then, the relative importance of each attribute (say, business criticality or amount of system integration) can be weighted and the prioritized list can be built

Many IT organizations rely on the Information Technology Infrastructure Library (ITIL) framework for service management and operations. Over the years the ITIL has proven a useful set of practices for IT Service Management (ITSM) and for aligning IT investments and operations with business goals. Among its benefits, advocates and practitioners of ITIL point to increased reliability, uptime, and predictable costs.

During your migration to the cloud, some—perhaps the majority—of your applications will be moved more or less intact as virtual machines (VMs). This Infrastructure as a Service (IaaS) style of migration has a number of advantages, as discussed in previous chapters. After they are in the cloud, applications can take advantage of the numerous services available to them, quickly giving those applications far more function and return on investment. This chapter first looks at how you can redesign your applications to better take advantage of the underlying cloud framework, and then how you connect them to services in the cloud to rapidly expand their features and functions

There are many options for relational database functionality in the cloud, and they serve different purposes

The NoSQL arena has many options, ranging from simple object storage to complex document and graph-based data stores. 

There are several different basic data types and it’s important to know what you can do with each of them so you can collect your data in the most appropriate form for your needs. People describe data types in many ways, but we’ll primarily be using the levels of measurement known as nominal, ordinal, interval, and ratio.

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