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A standard DIET platform gives access to SeD s placed under the control of a MA as explained at the beginning of this chapter. Sometime, it is useful to connect several MA together. This happens when several organizations wish to share their resources to offer a larger set of service types and more available servers. The Multi-MA extension allows this by creating a federation which shares resources between several MA.
In multi-MA mode, the behavior of a DIET hierarchy does not change when a client requests a service that is available under the queried MA. However, if a request sent to a MA does not found a SeD that can resolve its problem, DIET will forward the request to other MAs of the federation. To read more about multi-MA, see Chapter 13.