c# - Two way synchronous communication between application instances -


we have application manages remote device information.

the remote devices report in either live or test instances on separate servers (and maybe more in future).

sometimes, need tell device reporting 1 server start reporting other server (maybe move badly performing device live test investigation).

by time moved device reports in other, server should "expecting" device in order doesn't bounce reporting wrong place.

in effect means app1 needs tell app2 update db settings particular device , vice versa, need sort of two-way, synchronous communication between applications (since need know update successful before repoint device , need flag device moved on source server).

i'm looking clean way achieve minimum impact on existing application.

what approach? wcf? windows service?

any guidance on start appreciated.


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