At a big company, you usually focus on one area, like email marketing or paid ads, and go deep into it. The pay tends to be stable and the resources are good. At a small agency, you handle many things at once, which means you learn faster but the work can also be more demanding. Big companies move slowly and have more rules. Small agencies move fast and expect you to figure things out on your own most of the time. What do you think is the better environment for someone who wants to grow quickly in this field?