This practically focused monograph addresses the latest issues of resilient routing in networked systems. It consists of three parts and offers an in-depth introduction to the resilience of networked systems (Part I), a detailed description of schemes of resilient routing (Part II), and examples of the application of resilience mechanisms in selected communication scenarios (Part III). Topics and features: presents the essentials of network resilience; highlights the main causes of network node and link failures; elaborates on the costs and benefits of investing in resilience; discusses the taxonomy of challenges, faults, attributes, and disciplines of resilience; overviews the major metrics useful in evaluating resilience; provides a detailed classification of resilient routing schemes; analyzes the features of optimization models for selected problems of resilient routing; illustrates the properties of computationally efficient methods for determining the shortest sets of disjoint communication paths; shows the practical use of resilient routing mechanisms in selected communication scenarios with a particular focus on up-to-date concepts such as network virtualization or content-centric networking.