Use Cases and Deployment Scope
I use Acuity Scheduling, a Squarespace company, to allow prospects, clients, and colleagues to schedule appointments with me without the back and forth of both of us searching our calendars for openings. It allows me to create different types of appointments with different amounts of time set aside for them, to charge for some appointments and not for others, to display certain types of appointment publicly and others only by sending someone a link to it. In other words, it's extremely flexible. I can also upgrade for a month if I need to bring on other coaches for a special event and allow them to be scheduled in their own time zone and downgrade again when it's just me.