What is the difference between shared hosting, VPS, and a dedicated server from a security perspective?

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The level of security of a web project directly depends on the chosen type of hosting solution. On shared hosting, a single physical server is divided among hundreds of users who use a common operating system and system resources.

Under shared hosting conditions, a vulnerability in the site code of one of your neighbors could potentially create risks for other sites on the same server. Although modern panels isolate users from each other, human factor or configuration errors cannot be completely eliminated on mass hosting.

A VPS (Virtual Private Server) solves this problem through complete resource isolation using virtualization systems. Each client gets their own virtual counterpart of a physical machine with full control over the operating system and firewall.

When choosing a secure architecture for a project, consider the following aspects:

1. On shared hosting, security issues are basically handled by the provider, but you cannot change firewall settings or install specialized software.
2. On a VPS, all responsibility for security configuration, timely package updates, and closing vulnerabilities falls on the shoulders of the administrator.
3. A dedicated server provides the maximum level of control and isolation of hardware resources, but requires deep knowledge in administration.

What is the difference between shared hosting, VPS, and a dedicated server from a security perspective?

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