To ascertain the code quality we follow various standards for quality and performance.1. Envato’s WordPress Theme Coding Standards, Envato’s WordPress Plugin Coding Standard for WordPress Code2. W3C Validation with CSS Lint for HTML & CSS code3. PHP_CodeSniffer for PHP code4. WordPress Coding Standards5. We always add proper actions/filters in our code so that if any new functionality needs to be added in the future we can do that by creating an add-on or a child theme.