In the realm of application integration interfaces, the term "children" isn't a standard concept. However, there are a couple of ways to interpret it based on the context:

1. Components of an Integration Interface:

An integration interface itself can be comprised of various sub-components that work together to facilitate communication. These components could be considered "children" of the overall interface.  

2. Applications Consuming the Interface:

From a different perspective, applications that utilize the functionality or data exposed by the integration interface could be metaphorically referred to as "children."  These applications rely on the parent interface (the source of data or functionality) to achieve their goals.

Important Note:

While these interpretations provide some context, "children" isn't a commonly used term in application integration interfaces. If you encounter this term in specific documentation or discussions, it's best to refer to the provided context or seek clarification from the source to understand the intended meaning.