Available operating systems depend on the product, virtualization type, and templates currently offered with your service. Common options often include major Linux distributions, while some products may support other operating systems depending on the underlying platform.
Use the order page, rebuild options, or service details in your account as the source of truth for what is currently available to you. If an operating system is critical for your workload, confirm it before you place the order or perform a reinstall.
When selecting an OS, consider software compatibility, update cadence, and your team's familiarity with the platform.