I’ve defined these three eras specifically in the context of mission-critical computing, and for the purpose of this discussion, since each one has ushered in new forces of change that have added to those preceding it. To understand these factors, it’s worth noting that mission-critical computing has evolved through three distinct eras of change from the pre-Web era (before 1995), to the Web era (1995 to 2010), and now to the consumerization era (2010 and beyond). A number of key factors have shaped today’s expanded scope for mission-critical systems. Today, the scope of what is considered “mission-critical” within the enterprise has considerably expanded. Mission-critical systems generally require high transaction volume capabilities such as those within banking or retail systems, border security, airline reservations or logistics. In some cases, as with certain critical infrastructure, government and military systems, if they go down, they may also have an impact on national security. ![]() The operations are mission-critical because they are core to the company’s mission and, if they fail, they can cause significant financial or reputational damage to the organization. ![]() These are the processes and operations that directly support an organization’s end users and customers. Mission-critical computing has historically been defined as secure, reliable and scalable computing and process environments that support a company’s front office processes and operations.
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