This video demonstrates the new JSON parsing and inspection capabilities of AWS Web Application Firewall (WAF). The presenter showcases how WAF can now parse JSON in request bodies, allowing for inspection of specific keys or values using WAF rules. This feature helps protect APIs by validating JSON structure and content at the edge, reducing the load on backend services. The demo includes setting up a WAF rule to inspect JSON elements and block requests with invalid or unexpected content. By leveraging this capability, developers can enhance API security and reduce false positives by focusing on relevant JSON components.