This book is for engineers working on ASIC/SOC design and verification as well asstudents or beginners who want to enhance their knowledge about how to actuallyverify a chip. Beginners can get insight of what is expected. For verification experts it will be a guide to help improving their methodologies for efficient and effective functional verification processes. Topics covered in this chapter are:Purpose of the bookGeneral info on importance of verification and challengesBrief introduction on rest of the chaptersReference designsThe main purpose of this book is to present the whole process of functional verification of an ASIC for successful tape out‚ with examples from first pass working silicon of multi million gate designs. The idea is to present a successful methodology so that a trend can be set to move towards a uniform verification methodology where everyone can share various verification components with each other. This book is a guide for verification engineers to help improve the methodologies for efficient and effective functional verification processes.It is meant for everyone in industry involved with functional verification of ASICs. Also‚ it is useful for students for understanding what are the tools/processes to complete functional verification of ASICs. Design/verification engineers who are work ing on ASIC or SOC verification can use this book for self study. It can also be used as reference book in verification courses and any related topics.