Computing
- ".cda", a filename extension for a Compact Disc Audio track
- Cellular Digital Accessory, a means to identify the software version of a mobile phone
- Clinical Document Architecture, an HL7 authored health care documentation standard
- Compress Da Audio, one of the earliest MP3 warez groups
- Red Book (audio CD standard), Compact Disc Audio, the standard format for a CD
Read more about this topic: CDA