Final answer:
The most effective web filtering feature for organizations is content filtering, as it provides a comprehensive approach by encompassing aspects of malware blocking, URL filtering, and application control.
Step-by-step explanation:
The most effective web filtering feature for organizations aiming to mitigate malware infections or violations of the company's internet usage policy is content filtering. Content filtering encompasses elements of the other options, such as malware blocking, URL filtering, and application control, providing a comprehensive approach. This feature helps in scrutinizing the content of a webpage to determine whether it should be allowed or blocked based on the company's internet usage policies. Content filters look for forbidden terms or code that suggests the website might be malicious or inappropriate.
Malware blocking is specifically targeted at identifying and stopping known malware, but without the emphasis on content, it might not be as effective in preventing policy breaches. URL filtering works by blocking access to specific websites, which can be circumvented through proxies or VPNs. Application control allows organizations to restrict the use of unauthorized applications, which does not necessarily stop users from accessing compromising websites. Therefore, content filtering provides a more robust solution.