Question: what is mtom in wcf?
Answer: MTOM (Message Transmission Optimization Mechanism) – WCF supports 3 encodings (in context of WCF, encoding means converting a WCF message (serialized XML InfoSet) into bytes) – Text, MTOM & Binary. All Http Bindings (Basic, WS, Dual, etc.) support Text / MTOM encoding, Text being the default one.