Schedules vs. Triggers
Use schedules for time-based work and triggers for event-based work.
Use schedules for time-based work and triggers for event-based work.
Use a schedule when
Use a schedule when the work should run at a set time, such as every morning, every Friday, or once a month.
Use a trigger when
Use a trigger when the work should run after something happens, such as a new lead, message, form response, or record update.
Example
A weekly sales report should use a schedule. A follow-up for each new lead should use a trigger.