Signed Exchanges (SXG) help ensure AMP content is served securely and attributed correctly. To maintain optimal performance and indexing, regularly check the AMP report in Google Search Console for any SXG-related issues. Look specifically for errors labelled with 'signed exchange' and address them promptly. Additionally, use the URL Inspection Tool to verify if individual pages are correctly served with SXG and to diagnose live or indexed page problems. Google also provides email alerts for new SXG issues, enabling timely fixes to maintain the integrity and visibility of your AMP content. [Google]