Non-functional qualities are key to successful software architectures: operational qualities, such as stability, performance, and scalability support the acceptance and usability of a product, developmental qualities, for instance, flexibility, extensibility, and reusability, help software development organizations to build and maintain software products within reasonable cost and time budgets.

It is a challenge, however, to create software architectures that are stable, efficient, scalable, flexible, extensible, reusable, etc. Many software architectures actually lack appropriate operational and developmental qualities, and most architecture reviews focus on evaluating and improving the so-called "ilities" of a software architecture.

This tutorial explores concrete design tactics, i.e., technologies, patterns, practices, and methods, for achieving selected non-functional architectural qualities. For each quality the tutorial outlines its design space, the design tactics available, and the factors and forces that can influence a specific design decision. All aspects are illustrated with anecdotes and war stories from the real-world. Goal is to provide participants with thoughts, considerations, and measures to build usable and sustainable software.