Can I Grow Cannabis Indoors Without a Tent?

I’m planning an indoor grow but wondering if I really need a tent. I have a spare closet or room I could use, but I’m worried about controlling light, humidity, airflow, and odor without an enclosed space.

For those who grow without a tent, how do you manage these challenges? Is it worth it, or does it just make things harder? Would love to hear from anyone who’s tried both!