Software as a Service.

Serial - Audio Definition Model

An audio description metadata standard (ITU-R BS.2121)

Security Association Keys.

Storage Area Network.

Serial Advanced Technology Attachment.

Surround Brightness Ratio.

Software Defined Automation.

Serial Digital Interface.

Software Development Kit.

Smart Display Module.

Standard Development Organization. (such as SMPTE, or ITU for example) 

Serial Digital Transport Interface.

(MAC) Security Tag.

This is part of the IEEE 802.1AE and 802.1X to identify the protocol, identity the validation key for the frame, and provide replay protection.

Saturation Flux Density.

Single Frequency Network.