Case 1: you have a very precise idea of the message, tone, rhythm and intention
Perfect. You're looking for quality and efficiency. In this case, we generally proceed in three stages for voice-over delivery.
1/ I record a test with 2 or 3 tone proposals according to the brief
2/ You validate the tone that best suits your idea
3/ I proceed to the complete recording of the project in my studio in autonomy or in directed session and I deliver it to you.