The integrated debugging and inspection features within web browsers (e.g., Chrome DevTools, Firefox Inspector) used to monitor network requests and storage.

These tools are vital for the technical validation of a CMP’s effectiveness. Developers must use the Network and Application tabs to confirm that tracking scripts are correctly blocked before consent and fire after consent, ensuring the Cookie Consent GTM logic is sound.

Operational impact: This is the primary QA step to ensure the CMP’s category-based script blocking is functional and that the website is not committing a technical compliance error.