I recently completed a study of over 500 US-based customers in which I wanted to understand: what types of applications are being delivered and managed generally, how much does it cost to deliver and manage those applications how are web services being used how well are cloud computing solutions being adopted In my first post about what I learned from this investigation, I wanted to first share my thoughts about the concept of “application criticality”. We’ve all heard the term “line of business application”. While there are many specific definitions of what an LOB app is, a generally accepted definition is: An application that is vital to running a business This extremely vague term, while generally descriptive, doesn’t get down to the level of specificity needed to understand how one LOB app compares to another in importance, scope, or complexity. In order to better understand the population of applications being delivered and managed, I needed to get to a lower level of granularity. Our team therefore defined the concept of Application Criticality to better distinguish line of business apps from each other in terms of their importance to the business as well as their relative scope of influence on the business. Below are the 4 levels of criticality and their definitions. The descriptions of these levels of criticality are defined in terms of the impact on the business if these applications become unavailable. While there may be other ways to define these classes of criticality, we find it useful to refer to them in terms that line of business owners typically care about. Criticality Level Failures of applications in this class can result in: Mission Critical
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