What are the best practices for data validation in Magento 2?

For data validation in Magento 2 custom forms, it's essential to use Magento's built-in validation mechanisms to ensure both proper data processing and security. Leverage Magento's Form Validator for client-side validation and use server-side validation to protect against vulnerabilities like XSS or SQL injection. Always sanitize inputs with Zend_Filter_Input and use prepared statements for database queries. For additional functionality like tracking, integrate  google tag manager magento 2 for more robust analytics and event tracking. If needed, consult specialists at Amasty to ensure best practices are followed.