**Why does AWS need your Billing Information during sign-up?**
AWS requests billing information for several purposes. Firstly, it serves as a means of verifying the identity of the user creating the account. Secondly, it allows for the setup of a payment method since AWS services are typically billed based on usage. Additionally, billing information helps in validating eligibility for the free tier offering, preventing misuse. Moreover, it enables AWS to track and manage service usage efficiently, providing detailed billing reports to users.