According to the Configure and run cron guide for Magento 2 developers, the crontab.xmi file is used to declare and configure cron jobs for a module. The file should specify the name, instance, method and schedule of the cron job. Therefore, creating a crontab.xmi file and setting a schedule for the new cron job are the minimally required steps to accomplish this task. Verified References: https://devdocs.magento.com/guides
/v2.3/config-guide/cli/config-cli-subcommands-cron.html
To set up a new cron job in Adobe Commerce, you need to define it in the crontab.xml file. This file is essential to schedule cron tasks and is all that's required for simple cron job configurations. You specify the cron job schedule, method, and class in this file.
Here's a minimal example of crontab.xml:
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:
magento:module:Magento_Cron:etc/crontab.xsd">
<group id="default">
<job name="your_custom_cron_job" instance="Vendor\Module\Cron\YourJob" method="execute">
<schedule>0 * * * *</schedule> <!-- Runs every hour -->
</job>
</group>
</config>
* group id: This specifies the cron group; "default" is commonly used, but you can define custom groups in cron_groups.xml if necessary.
* job: Defines the cron job, with name, instance (path to the class), and method attributes.
* schedule: Uses standard cron expressions to specify the frequency.
Additional Resources:
* Adobe Commerce Developer Guide: Cron Jobs
* Magento 2 Crontab XML Configuration