I can believe in certain domains things can work this way, but we have way too many complex stakeholders and dependencies to have random deploys to production c

I can believe in certain domains things can work this way, but we have way too many complex stakeholders and dependencies to have random deploys to production constantly happening without notice by anybody who feels like it. At very least there is comms, stakeholder signoff, etc. How would you have eg: customer support staff able to operate if the very button they are telling the customer to press disappears or changes its text during the call?