Digital Business Card Organizer

Would like to create a digital business card management portal.
Consist of 2 user groups.

1) Super-Admin
- add, delete, view, edit company account

2) Company Admin
- single login account (one account to manage)
- manage all cards under the company (customization and content)
- edit any card content
- enable / disable / reset card
- add new card

each company will be at their own subdomain.
Features of the card will be mentioned through PM.

need to be very fast loading.