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Aggregate size is a blocker to fully interfederating via eduGAIN. To remove this blocker, a global MDQ service should be developed. We should also examine methods for actually querying on things like entity categories and other arbitrary bits of metadata within MDQ, to enable discovery services to make use of it

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Considerations/Questions:

The entity categories and other arbitrary bits of metadata search needs adding new features 

Will this not be provided by SeamlessAccess?

Should this be run by eduGAIN OPS?

How is such a thing handling updates of metadata

Perhaps this needs a more clever protocol like DNSsec? 

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