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Learning AWS - Second Edition by Amit Shah, Aurobindo Sarkar

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Setting up VPC for high availability

In this section, we describe a common VPC setup for some of the high-availability approaches discussed later in this chapter.

Before setting up your VPC, you will need to carefully select your primary site and a DR site. Leverage AWS's global presence to select the best regions and availability zones to match your overall business objectives. The choice of a primary site is usually the closest region to the location of a majority of your customers, and the DR site could be in the next closest region, or a significantly distant one depending on your objectives.  Next, we need to set up the network topology, which essentially includes setting up the VPC and the appropriate subnets. The public-facing servers ...

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