Tessera is a hosted ticketing platform that allows you to use a subdomain of your domain name.
Add the following records to your DNS:
TXT asuid.tickets. : "A33C7CC2E0CDB230938EDDA26F693DD4A575CBF8C98222BF495FC88379A5E39A" CNAME tickets. : "tessera.azurewebsites.net"
The TXT record will allow Tecture to verify your domain name.
The CNAME subdomain will point tickets.mydomain.com to Tessera.