Manual testing services involve the use of human testers to manually test a software application or system in order to identify defects and issues, and to verify that it is functioning correctly. These services are typically provided by specialized testing companies or by in-house testing teams within an organization. Manual testing services can include a wide range of activities, such as:

• Creating and executing test cases to validate the functionality of the software
• Verifying that the software meets the specified requirements
• Identifying and reporting defects and issues found during testing
• Retesting the software after defects have been fixed to ensure that they are properly resolved
• Providing feedback and recommendations for improving the quality and reliability of the software

Manual testing services are often used in conjunction with automated testing services to ensure the thorough and comprehensive testing of a software application or system.