I think that currently, many alternative apps and sites will be connecting directly to the RPC servers (either steemd.steemit.com or public (or private) community nodes).
Steemit have said that over the next few weeks third-party developers using steemd.steemit.com should redirect their API requests to the new Jussi node(s) (at api.steemit.com), and that they will stop supporting direct access to the RPC.
There may be a few compatibility issues in this process, as the interfaces are not 100% compatible, but probably nothing severe. Most community RPC nodes will probably transition over a few months to be using the Jussi proxy layer in front of them too.
I think that currently, many alternative apps and sites will be connecting directly to the RPC servers (either steemd.steemit.com or public (or private) community nodes).
Steemit have said that over the next few weeks third-party developers using steemd.steemit.com should redirect their API requests to the new Jussi node(s) (at api.steemit.com), and that they will stop supporting direct access to the RPC.
There may be a few compatibility issues in this process, as the interfaces are not 100% compatible, but probably nothing severe. Most community RPC nodes will probably transition over a few months to be using the Jussi proxy layer in front of them too.
I'd think in the bottom two niches, as they're not hosted on the Steemit servers (or not the same instances, anyway).