Configures and troubleshoots scheduled tasks on Render using cron job services. Use when the user needs to run something on a schedule, write a cron expression, set up a periodic job, migrate from Heroku Scheduler, choose between cron jobs and background workers, or fix a cron that isn't firing. Trigger terms: cron job, scheduled task, periodic job, cron expression, schedule, run every, timer, Heroku Scheduler migration.