Class 1: Companies who have adopted Hadoop as Big Data Strategy. Class 1 companies are using Class 2 companies are partner to excel in Big Data space
Class 2: Companies who have taken Hadoop and productized it
Class 3: These companies are creating products which are adding value to overall Hadoop eco-system.
Class 4: These companies are consuming or providing Hadoop based servicess to other companies on smaller scale compare to class 1 and class 2 companies.