Acceptable Use of ApplicationOverrides in SPv3 and SPv4

[Scott Cantor]

> I think the fundamental thing to understand is that a highly federated SP today (the minority to be clear) now consists of an Agent that needs to care about virtually none of that, and a Hub that handles all of it. The Hub is not a proxy, but it serves a similar function in that kind of scenario in "finessing all the details and complexities" down for the Agent to consume.

I'd add that in fact a lot of the "just do a proxy" cases that arise today in most federated SPs are largely things that the Hub design can obviate. It is essentially capable of a lot of the things proxies get used for while not actually acting as a visible intermediary.

"Forcing data to a normalized form" and "supplementing data locally" are two big ones, certainly.

A lot of the stuff you mentioned are the sorts of things that lead people to use proxies. I didn't at all set out to stop it or replace it, but functionally speaking the features do provide an alternative.

-- Scott