Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), are crucial for encrypting network communications and ensuring secure data transmission over the internet, particularly for HTTPS traffic. Despite the increased adoption of TLS, challenges persist, such as managing expiring TLS certificates, which can cause service disruptions if not renewed. This is complicated by the need to track multiple certificates across diverse services in large environments, as seen in past incidents like Shopify's near-outage due to an outdated certificate. Gremlin Reliability Management addresses these challenges by automatically detecting network dependencies and running Certificate Expiry tests to identify certificates nearing expiration within the next 30 days, thereby enabling proactive management and ensuring services remain secure and accessible.