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Learning AWS - Second Edition by Amit Shah, Aurobindo Sarkar

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Using a Pilot Light architecture for DR

As the name suggests, in this architecture, you set up data mirroring/replication of your on-premise or cloud databases. In addition, you create images of your critical on-premise or cloud servers. These images would typically include your web servers and application servers. In order to avoid incurring unnecessary running costs, these instances are launched only when they are needed. In the event of a disaster, the web servers and application servers can be quickly launched from the preconfigured images.

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