If there's a new item in "invoices" then we may want it to be added to the accounting software. There are endless use cases and it is a few clicks to create a trigger whenever some data is inserted, updated or deleted from some specific table. Some more table examples: projects, tasks, check_in_out, payments, users, jobs, applicants, customers, price_changes, etc. etc.
🔧 = usually 5-30min job