Build marketplaces fast (like Bild.de) or step-by-step (like Hornbach)?

The right strategy for building a platform: online as quickly as possible or step-by-step?

Platform Building: Online as quickly as possible or step by step? BILD launched its marketplace within 11 weeks, but the speed has left its mark. Others such as Hornbach or Popken Fashion are taking much longer. The question of which is better was discussed by the panel at the Mirakle Platform Summit.