- **Description:** Final testing and launch preparation - **Activities:** - Perform comprehensive manual testing - Test all user workflows end-to-end - Verify all integrations with backend APIs - Test real-time features under load - Perform security testing (input validation, XSS, CSRF) - Test on target devices and browsers - Verify SEO and meta tags - Create user documentation - Prepare launch announcement - Plan post-launch monitoring and support - **Deliverables:** QA report, user documentation, launch checklist