One interesting branch of Mathematics, exclusively developed for the purpose of applications to other fields is Graph theory. Graph colouring is important tool to design models for practical applications. A new approach of block colouring has been introduced by authors with larger scope for applications to IoT, data analytics, communication network etc. The advent of digitization has led to sweeping transformation in all fronts of society with the perception of education, economy, life style, professionalism assuming new dimensions within a short span at a swift pace. Researchers have dwelled into innovative creations,and interventions to design models simulating the ambience for heterogeneous demand providing domain-specific solutions. Authors have been motivated by the application of graph coloring as an effective tool in artificial intelligence, chemical structures, electrical circuit designs etc. and this book is the first volume of AUM Block Coloring series to be continued sequentially. Study on Corona product is chosen primarily because of their characteristic to deal with massive data and reduction of the volume of cost and space at every stage leading to optimal benefit.