VPS主机
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VPS（虚拟专用服务器）主机使用虚拟机管理程序技术将物理服务器分割为隔离的虚拟机，为每个租户提供有保证的CPU和RAM分配。与[[shared-hosting|共享主机]]不同，VPS租户获得专用IP地址，可实现适当的[[reverse-dns|反向DNS]]配置并改善事务性电子邮件投递率。Root访问权限允许安装自定义软件、管理[[ssl-tls|SSL证书]]和进行精细的[[web-hosting|Web服务器]]配置。VPS方案常见于需要稳定性能但无法承担[[dedicated-server|独立服务器]]费用的成长型企业。
示例
A SaaS startup on a $40/month VPS gets a dedicated IP (e.g., 203.0.113.5), configures PTR reverse DNS to mail.startup.com, and achieves 98%+ email inbox placement versus 85% on shared hosting.