Monitor CDN Custom Domains for SaaS Asset Delivery

Frontend and web performance engineers know that CDN-delivered assets are critical for SaaS performance. An expired SSL certificate on a CDN custom domain can lead to broken images, stylesheets, or scripts, severely impacting user experience and site functionality.

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The problem

Many SaaS applications leverage Content Delivery Networks (CDNs) with custom domains to serve static assets like images, CSS, JavaScript, and fonts, ensuring fast global delivery. If the SSL certificate configured for your CDN custom domain expires, browsers will block these assets due to security concerns. This results in broken layouts, non-functional features, and a severely degraded user experience, making your application appear unprofessional or broken. Recovering from such an incident requires immediate intervention.

Imagine your main product dashboard loading without any CSS or JavaScript because the certificate for your `cdn.your-saas.com` domain expired. Users would see a completely unstyled, unusable interface, effectively halting their productivity. This isn't just an aesthetic issue; it can break core functionalities, prevent users from interacting with your product, and lead to a cascade of support tickets. Proactive monitoring is crucial to prevent these silent, yet devastating, failures.

How Certfly solves it

Continuously monitor SSL certificates for all custom domains configured with your CDN.

Receive advanced warnings for expiring CDN certs, preventing broken assets and UI issues.

Ensure uninterrupted delivery of static assets and maintain optimal SaaS application performance.

Concrete example

CDN Asset Check:

    <link rel="stylesheet" href="https://cdn.your-saas.com/css/main.css">\n
    <script src="https://cdn.your-saas.com/js/app.js" defer></script>\n
    <img src="https://cdn.your-saas.com/img/logo.png" alt="Logo">\n
    \n
    Status: All assets secure via CDN.\n
    Next cert renewal for cdn.your-saas.com: Q4 2024
  

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Watch your TLS certs so you don't have to.

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Frequently asked questions

Does Certfly support all major CDN providers like Cloudflare, Akamai, or AWS CloudFront?

Yes, Certfly monitors any custom domain, regardless of the CDN provider. As long as your custom domain is publicly resolvable, Certfly can check its associated SSL certificate.

What if my CDN uses a shared SSL certificate, not a custom one?

If you're using a CDN's default domain (e.g., `d123.cloudfront.net`), the CDN provider manages its certificate. Certfly is most beneficial for custom domains where you or your CDN partner are responsible for certificate management.

Can Certfly help if I have multiple custom domains for different CDN origins?

Certainly. You can add each of your CDN custom domains to Certfly for individual monitoring. This ensures comprehensive coverage across all your asset delivery points, preventing any single point of failure.