Description: The zone TTL (Time to Live) is the lifespan value that specifies how long DNS records in the zone should be cached. This value is expressed in seconds and determines the duration for which a DNS server can store the information of a record before it must query the authoritative server for updated information. A shorter TTL can be beneficial for frequently changing records, as it allows updates to propagate more quickly. Conversely, a longer TTL can reduce the load on DNS servers and improve name resolution speed, as records are kept in cache for a longer time. Proper TTL configuration is crucial for the performance and availability of online services, as it influences how quickly changes in network infrastructure are reflected in the user experience.