To claim the free tier of AWS without using a credit card, you can try using alternative payment methods such as virtual credit cards or prepaid cards. Some prepaid cards are accepted by AWS for verification purposes.
Additionally, you can explore options like AWS Activate, which provides additional benefits for startups, students, and other organizations. It's always a good idea to check the AWS documentation or contact their customer support to get the most up-to-date information on available payment options for claiming the free tier.