What order should I put primer and moisturizer?

Could you please clarify for me the ideal order in which to apply primer and moisturizer to my skin? I've heard conflicting advice and I'm unsure which comes first. Some say moisturizer should be the base, allowing the primer to lock it in and create a smooth canvas. Others argue that primer should be applied first to create a barrier and allow for better product penetration. Could you shed some light on the proper sequence and why it's important to follow it? I'd appreciate your expert guidance on this matter.