A VPS is a virtual machine that runs its own operating system and has dedicated resources like CPU, RAM, and storage. It's ideal for websites and applications that need more power and flexibility than shared hosting can provide.

Root or SSH access gives you full administrative control over your VPS. This allows you to install software, configure services, and manage the server environment as needed — essential for developers and power users.

This depends on your use case. For a basic website, 1–2 GB RAM and 1 vCPU may be enough. For applications, large traffic sites, or game servers, you may need 4 GB+ RAM and multiple CPU cores.

Yes, most VPS hosting providers allow you to scale your server vertically by adding more CPU, RAM, or storage as your needs grow — without needing to migrate to a new server.

You can install a variety of Linux distributions (Ubuntu, CentOS, Debian, etc.) and in many cases, Windows Server editions too — depending on the hosting provider's offerings.

A managed VPS includes technical support and maintenance by the provider. An unmanaged VPS gives you full control but requires you to handle setup, updates, and security yourself.

VPS servers are generally secure, especially with proper configurations, firewalls, SSH key authentication, and regular updates. Managed VPS plans often include extra security features like automatic backups and malware protection.

Yes, with proper configuration (using a control panel like cPanel, Plesk, or direct NGINX/Apache setup), you can host multiple websites or applications on a single VPS instance.