# Scale
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This section helps you move voice into production and run it at scale. It covers monitoring, resiliency, limits and quotas, spending, moving out of the sandbox, calling best practices, and where voice is supported by country.

## In this section
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|  |  | 
| --- |--- |
| [Monitoring](nx-voice-scale-monitoring.md) | Track delivery and engagement with CloudWatch metrics, Amazon EventBridge events, CloudTrail logs, and message feedback. | 
| [Resiliency](nx-voice-scale-resiliency.md) | Design for resiliency with multi-Region redundancy and phone pools. | 
| [Limits and quotas](nx-voice-scale-limits.md) | Review the limits and quotas that apply, and how to request increases. | 
| [Spending and cost](nx-voice-scale-spending.md) | Set a spend limit and monitor your messaging costs. | 
| [Move out of the sandbox](nx-voice-scale-sandbox.md) | Move your account out of the sandbox and into production. | 
| [Best practices](nx-voice-scale-best-practices.md) | Follow sending best practices to protect deliverability and stay compliant. | 
| [Country support](nx-voice-scale-country-support.md) | See where this channel and its number types are supported by country. |