Hello @Sundar Vadivelu
Thanks for reaching out to Microsoft Q and A platform.
As far of research, SCTP is not supported in Azure Platform.
· Meaning, within the Vnets or across the Vnets SCTP is currently not supported. In some scenario it may work but Not Supported.
· What protocols can I use within VNets? - You can use TCP, UDP, and ICMP TCP/IP protocols within VNets.
· There is UDP encapsulation of SCTP, which could be used as workaround if you could enable it.
RFC 6951 - UDP Encapsulation of Stream Control Transmission Protocol (SCTP) Packets for End-Host to End-Host Communication (ietf.org)