Indian business houses and most European business groups are vertical in character. Vertical business groups are also referred to as "hierarchical business groups".

Encarnation refers to Indian business houses, emphasizing multiple forms of ties among group members. Powell and Smith-Doerr state that a business group is a network of firms that regularly collaborate over a long time period. Granovetter argues that business groups refers to an intermediate level of binding, excluding on the one hand a set of firms bound merely by short-term