What does bundle identifier mean in an iOS project?

Question

When I use command line tool template it has a bundle identifier inside the wizard. What does bundle identifier mean? Is this similar to namespace?

Answer 1

Adding more points to above answers: provisioning profile, the app’s bundle ID needs to be unique and the project assigned to a team. This id can be set in app's target general tab. To create the default bundle ID, Xcode concatenates the company identifier with the product name you entered when creating the project from a template. The string format should be Uniform Type Identifier(UTI), which is alphanumeric characters (A-Z,a-z,0-9), hyphen (-), and period (.)