Certificates, App ID and Provisioning Profile

Question

For submitting an iPhone app to the App Store, we need to create Certificates, App ID and Provisioning Profile.

I often get confused whith these things (even after read

Answer 1

You need one certificate for Development and one certificate for Distribution (new ones for every year of enrollment). These 2 certificates can be used for any number of iOS apps.

A bundle ID is what identifies an app (not its name), so you should use the same ID for all versions and builds, including development, ad hoc, distribution, and updates of that same app.