Designing scalable application architectures

In this section, we present some of the common approaches to designing scalable application architectures. Some of these design principles are not unique to cloud-based applications, however, they become even more important in a cloud context. Let's review a few of these design principles in the following sections.

Using AWS services for out-of-the-box scalability

One of the simplest guidelines to follow is leveraging AWS PaaS services wherever possible to enjoy the benefits of scalability and availability out of the box, without the associated administrative headaches or design complexity. Don’t reinvent the wheel when ready-to-use services such as email, queuing,...