Domain Registration

1. The domain is must to run any lightning application or components
   1. Navigation in Lightning Exp:
      Setup
      | – Settings
      | — Company Settings
      | — My Domain Classic:
      Setup
      | — Administer
      | — Domain Management
      | – My Domain
      Step 1: Enter the domain Name
      Step 2: Check the availability
      Step 3: Once ready, login to test the connectivity
      Step 4: Click ‘Deploy to User’

eg.,
www.ranjithkrishnanlgbatch111-dev-ed.my.salesforce.com