The Solutions Architect's Handbook guides readers to create robust, scalable, highly available, and fault-tolerant solutions by learning different aspects of solution architecture and next-generation architecture design in the cloud environment. This book will start by detailing solution architecture and how it fits in an agile enterprise environment. It will further take the reader through the journey of solution architecture design by providing detailed knowledge of design pillars, advanced design patterns, anti-patterns, and cloud-native aspects of modern software design. The reader will further dive deep into solution design performance optimization, security, compliance, reliability, cost optimization, and operational excellence. This book provides an in-depth understanding of the automation of security, infrastructure, DevOps, disaster recovery, and documentation of solution architecture. This book also provides a good understanding of future-proof architecture design with data engineering, machine learning, IoT, and quantum computing. As a bonus, this book also offers a soft-skill aspect of solution architect and continuous learning techniques.