It’s not a matter of choosing one over the other. Both standard types have their advantages and disadvantages.
For corporations, implementing both standards is beneficial!
For production process control, ISO/ASTM 52920 is more effective.
You don’t need it unless there’s a desire for improvement or excellence in your AM services. It’s necessary only when reproducible processes and reliable supply chains are essential within your field of operations. This is often the case in regulated industries with highly complex or risky applications.