Achieving scalability requires the underlying application architecture to be scalable in order to fully leverage the highly scalable infrastructure services provided by AWS cloud.
Setting scalability objectives for an application will depend on many factors, such as the nature of the application, the number of users (peak and average), the growth rate, the business model (subscription based, free, paid, or freemium model), SLAs, the nature of customers (businesses or the general public), and so on. It is very important to set some scalability objectives, however, as operating on the cloud doesn't require you to be absolutely accurate about hard-to-estimate parameters. On the cloud, you can always respond quickly to your rapidly evolving business. So, while it is good to have sufficient information to guide you initially, you don't need...