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The Case for Drill-Ready Cloud Computing

As cloud computing has matured, more and more local applications are replaced by easy-to-use on-demand services accessible via computer networks (a.k.a. cloud services). Running behind these services are massive hardware infrastructures and complex management tasks (e.g., recovery, software upgrades) that if not tested thoroughly can exhibit failures that lead to major service disruptions. Some researchers estimate that 568 hours of downtime at 13 well-known cloud services since 2007 had an economic impact of more than $70 million [18]. Others predict worse: for every hour it is not up and running, a cloud service can take a hit between $1 to 5 million [32]. Moreover, an outage of a popular service can shutdown other dependent services [11, 37, 59], leading to many more frustrated and furious users.