This book is aimed at anyone who wants to understand, optimize, and apply auctions from a game-theoretical perspective. It combines insights from theory with practical experience. It particularly focuses on procurement auctions, as game-theoretically optimized procurement auctions can lead to significant savings. You will learn: - The building blocks that make up auctions - How to strategically navigate the various types of auctions - How to design an auction to your advantage - How to proceed when participating in auctions as a bidder, especially in procurement auctions - Where you need consultants and what you can handle on your own. Additionally, a comprehensive auction glossary explains all the important terms and concepts related to auctions.