Determine what specific customizations or enhancements you need for WHMCS.
or more complex customizations, consider developing custom modules.
Customize WHMCS's client area and admin area templates to match your brand or improve user experience.
Thoroughly test your customizations in a development environment before deploying them to your production WHMCS installation.
This ensures compatibility and security with the latest versions of WHMCS.
WHMCS offers hooks and APIs that allow you to extend its functionality without modifying the core code.
Here's a brief overview of taking WHMCS customization to the next level