It is of great value for every Programmer / Developer-Designer / DevOps Professional to be conversant with Object Oriented Analysis and Design. The widely accepted standard for it is UML, Unified Modelling Language. Such a knowledge enhances the value of every software professional by getting into a reasonable depth of these two OOAD and UML. This book presents the same almost like a story, with a popular Case Study. You will reach a degree of good understanding as you finish this book. Many illustrations make the reading process to be a fun sport.