hile for a single MongoDB
host there is no gain in using wildcarded domains (an exact hostname can be specified), it could be beneficial for
cases when the applications in the cluster access multiple MongoDB hosts that match some wildcarded domain. For example,
if the applications access <code>mongodb1.composedb.com</code>, <code>mongodb2.composedb.com</code> and <code>mongodb3.composedb.com</code>, the egress
traffic can be configured by a single configuration for the wildcarded domain <code>*.composedb.co