Answer:
The institutional structure is that part of the organization most visible to the outside public
Explanation:
An organization ecosystem is defined simply as a system formed by the relationship or interactions of a community of organizations and their environment.
Organizational niche:
is simply an area, region or domain of unique environmental resources and needs.
An Organization is simply defined as a body or and entity that have clear inside/ outside boundary that work towards an explicit aims.
The institutional view is of the notion that when an organizational field is just getting started, diversity is the norm, but later there is a push for similarity.