Congrats!! You just launched a site on Pantheon. This is a big deal. Revel in your glory.
When you're ready to launch another site, use this best-practice checklist to establish a repeatable going live procedure.
Create the Live environment
Upgrade Site Plan
Activate New Relic Pro
Load and Performance Test
Add Domains to the Live Environment
Redirect to a Primary Domain
Setup Availability Monitoring
Enable and Schedule Weekly Backups
WordPress Launch Check / Drupal Launch Check
Review Status Reports