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Learning AWS - Second Edition by Amit Shah, Aurobindo Sarkar

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Scaling from one to half a million users

In the beginning, you can get started with a single EC2 instance that hosts your web service and the DB on the same instance. You can provision an EIP and use Route53 for DNS services. This should be sufficient to handle a typical website or service for a new business.

As your number of users increases to several hundreds or thousands, there are several easy-to-upgrade options available to scale your infrastructure. The simplest first step is to get a bigger EC2 instance (scale vertically). You can also leverage instance types (high I/O, memory, compute, storage intensive) based on your specific workloads. Additionally, increasing PIOP settings can give you the results you need to handle an increasing ...

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