Ansible provides a secure way to store sensitive data using Ansible Vault. Ansible Vault is a tool for encrypting and decrypting files that contain sensitive information. To secure data, you can create an encrypted variable file using ansible-vault create, and then reference these variables in your playbooks. During playbook execution, Ansible will prompt for the vault password to decrypt the variables. This approach ensures that sensitive data is stored securely and can be safely versioned in your source code repositories.