As I write this booklet series, the demand for Developers, Architects, Managers, and Directors who are knowledgeable in Microservices is ever increasing. With my years of experience, I am sure Microservices will also pave the way to another architectural form. But the mastery of Microservices will hold the key, especially for Architects and Decision Makers, to be able to weigh the current and future possibilities for an organization. The attempt that I am making is to allow organizations to make better and informed decisions. There's no sense in organizations making decisions just to revert to their original form later. Part 01 of this booklet series is titled 'The Decision Maker'. This Microservices booklet is intended to be a great resource for Decision Makers in Software Product and IT Services organizations. This book is perfect for anyone in these Engineering Roles: Architect, Manager, Director, Vice President, or Chief Technology Officer. Ideally, it is for anyone who is evaluating a move to the Microservices Architecture.