What is better for system administrators: AWS SysOps Associate or Azure certifications?

Both AWS SysOps Associate and Azure certifications are good for system administrators.

• Choose AWS SysOps if you work with AWS cloud and want deeper cloud operations skills.
• Choose Azure (like AZ-104) if your job uses Microsoft tools and enterprise environments.

In short: pick the certification based on your current work platform AWS for AWS environments, Azure for Microsoft-based systems.