When buying an endpoint security solution, the following factors should be considered:

1. Threat protection: The endpoint security solution should provide comprehensive protection against known and emerging threats, including malware, viruses, spyware, and other malicious software.
2. Ease of use: The solution should be easy to install, configure, and manage, with a user-friendly interface and straightforward management tools.
3. Scalability: The solution should be scalable to meet the changing needs of the organization as it grows and evolves.
4. Integration with existing systems: The solution should integrate with existing systems, such as firewalls, intrusion detection and prevention systems, and network access control systems, to provide a comprehensive security solution.
5. Performance impact: The solution should have minimal impact on the performance of endpoint devices and should not slow down the system.
6. Cost: The solution should be cost-effective and provide good value for money, considering the level of protection offered and the ease of use of the solution.
7. Customer support: The solution should come with comprehensive customer support, including training, documentation, and technical support, to ensure that the solution can be effectively deployed and used.
8. Data privacy: The solution should be designed to protect the privacy of sensitive data and should have robust security measures in place to prevent unauthorized access to this data.
9. Compliance: The solution should be compliant with relevant security and privacy regulations, such as HIPAA and GDPR, to ensure that the organization is meeting its legal obligations.

By considering these factors, organizations can ensure that they select an endpoint security solution that meets their specific security needs and provides comprehensive protection against the latest threats.