If a creature is put into the command zone instead of the graveyard does it still trigger 'dies' abilities?

A 'dies' trigger is defined in the Comprehensive Rules as an ability that triggers when a creature 'is put into a graveyard from the battlefield' (CR 700.4). The key requirement is that the card must actually reach the graveyard for the trigger to fire.

In Commander/EDH, a state-based action or replacement effect allows a player to redirect their commander from any zone to the command zone instead of the graveyard (or exile). This is a replacement effect: the event of 'going to the graveyard' is replaced by 'going to the command zone.' Because the commander never actually enters the graveyard, the 'dies' condition is never met (CR 614.1).

This matters for both the dying creature's own triggered abilities (e.g., 'When CARDNAME dies, draw a card') and for other cards watching for death triggers (e.g., 'Whenever a creature dies, put a +1/+1 counter on...'). Neither will trigger if the commander moves to the command zone.

Concrete example: Your commander is Teysa Karlov and your other creature Doomed Dissenter is destroyed. Doomed Dissenter goes to the graveyard normally, so its 'dies' trigger works fine. But if Teysa Karlov herself is destroyed and you choose to send her to the command zone, her own 'dies' trigger (if she had one) would NOT fire, and Doomed Dissenter's 'Whenever another creature dies' synergy with Teysa would also not apply to her moving to the command zone.

The bottom line: choosing the command zone replacement effect entirely bypasses the graveyard, so no death-based triggers see the event at all (CR 700.4, CR 614.1, CR 903.9).