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Introduction 1 These materials are © 2020 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Introduction T oday's IT teams face a common challenge: how to securely enable the growing universe of roaming users, devices, and software as a service (SaaS) apps without adding complexity or reducing end-user performance — all while leveraging their existing security investments. Likewise, users in remote and branch offices need the same level of network performance and security as users in central locations. IT must develop strategies to protect users — wherever they work and on any device they use — from a variety of threats, including malware infections, command-and-control callbacks, phishing attacks, unauthorized access, and unacceptable use, among others. This book examines the changing network and security land- scape, gaps in the existing security stack, and the steps you can take to keep your organization safe and secure as your network evolves. These changes are paving the way to a new solution cate- gory that delivers multiple security functions from the cloud that are simple, scalable, and flexible to meet the unique needs of your business and its changing network architecture. The goal of this book is to help you understand the newest trends in networking and security, the toughest challenges that these changes bring, and how networking and security technologies have evolved over time. Finally, the book introduces you to a new product category that has emerged to help solve these problems and how Cisco's approach can help your business today and in the future. About This Book This book consists of five chapters that explore: » Key networking and security trends and their associated challenges (Chapter 1) » Different networking and security options and key consider- ations (Chapter 2)