In which scenarios are tier groups not utilized?

Tier groups are typically used in scenarios where there is a clear hierarchical structure to manage or model the relationships and dependencies among different components. For example, in a water distribution system, the hierarchy might reflect how water moves through various levels of pipes and taps, which can be efficiently organized into tier groups.

In the context of partitioned systems such as electric and telecommunications networks, these systems often do not require a strict hierarchical organization as their structures can be more fragmented or distributed. The interdependencies may not form a clear tier structure, leading to situations where tier groups would not be appropriate or necessary for effective modeling. Therefore, utilizing tier groups in partitioned systems may not provide the benefits that they offer in hierarchical models.

On the other hand, designing resource allocation layouts and managing user access levels often benefit from tier groups as they can reflect hierarchies in resource distribution or role-based permissions. In summary, tier groups are not typically utilized in scenarios involving partitioned systems due to their distributed and non-hierarchical nature.