MTOM is related to Bandwidth while Streaming is related to Buffering.
Compression – WCF’s extensible channel architecture allows us to easily plug-in a compression channel. So, how about not using MTOM or binary, and just applying compression on what we are about to transfer? First compression doesn’t come for free, it costs a lot in terms of CPU. You need to weigh the CPU cost of compression / decompression vs. Latency cost (i.e. is bandwidth a bottleneck?). For Binary encoding, I think it doesn’t make sense (I would encourage you to do your own test, but it didn’t show me much difference), for MTOM encoding I would prefer sending an already offline compressed attachment (i.e. a compressed .bmp instead of .bmp) & for Text encoding, yes, it may make sense. Say, you want to send 10000 customers (though you shouldn’t be doing that) and you need to use Text for interoperability reasons. I recommend to use compression by all means for such scenarios.
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