Recently InformationWeek published a piece, authored by Doug Henschen, that listed 13 innovative Big Data vendors.
These 13 vendors distribute 16 unique data management products (since both Amazon and Cloudera offer multiple distinct data management/processing systems), all of which push the boundary on Big Data management.
In this post I will attempt to subcategorize these 16 products into a competitive grouping, where products placed inside the same group can be considered replacements for each other (and hence are competitive), and each group is complementary to every other group.