An organization must have a close relationship with its enviroment to be effective. Transorganizational Development involves the coming together of two or more organzitions in a planned change. I believe that is is important because more companies can help each other by sharing the resources. It also helps the competitiveness for companies. These types of organizations have been joined for a common purpose.
Organizational culture is the back bone of a organzitation.
It is the norms and the values that are shared with the entire organzitation and its members. There can be many different cultures. Depending on what type of organization you are in is what type of culture you may have. For instance, if you are in a retail business, the values of the organization may have something to do with the type of service you provide. The culture of an organization is very important.