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Site Reliability Engineering (SRE) is a discipline in the field of Software Engineering that monitors and improves the availability and performance of deployed software systems, large software services (which are expected to deliver reliable response times across events such as new software deployments), hardware failures, and cybersecurity attacks. [1]
Resilience is a multi-facet property, covering four dimensions: technical, organization, social and economic. [6] Therefore, using one metric may not be representative to describe and quantify resilience. In engineering, resilience is characterized by four Rs: robustness, redundancy, resourcefulness, and rapidity.
High availability is a property of network resilience, the ability to "provide and maintain an acceptable level of service in the face of faults and challenges to normal operation." [ 3 ] Threats and challenges for services can range from simple misconfiguration over large scale natural disasters to targeted attacks. [ 4 ]
Resilience, as defined by Presidential Policy Directive PPD-21, is the ability to prepare for and adapt to changing conditions and withstand and recover rapidly from disruptions. [7] Cyber resilience focuses on the preventative, detective, and reactive controls in an information technology environment to assess gaps and drive enhancements to ...
Business continuity planning life cycle. Business continuity may be defined as "the capability of an organization to continue the delivery of products or services at pre-defined acceptable levels following a disruptive incident", [1] and business continuity planning [2] [3] (or business continuity and resiliency planning) is the process of creating systems of prevention and recovery to deal ...
Research in resilience engineering over the last decade has focused in two areas, organizational and information technology. Organizational resilience considers the ability of an organization to adapt and survive in the face of threats, including the prevention or mitigation of unsafe, hazardous or compromising conditions that threaten its very existence. [6]
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The first type of resilience engineering work is determining how to best take advantage of the resilience that is already present in the system. Cook uses the example of setting a broken bone as this type of work: the resilience is already present in the physiology of bone, and setting the bone uses this resilience to achieving better healing ...