# Prepare for launch
source: https://developer.mastercard.com/unified-installments/documentation/experience-design-guide/installments-solutions-for-existing-cards/prepare-for-launch/index.md

Once the installments program has been designed and embedded into your app, you should verify launch readiness with a testing plan and checklist.

## Testing plan {#testing-plan}

Guidance to set up your pre-market consumer testing plan  

[Learn more](https://developer.mastercard.com/unified-installments/documentation/experience-design-guide/installments-solutions-for-existing-cards/prepare-for-launch/testing-plan/index.md)

## Checklist {#checklist}

The support and tools you need to Go Live  

[Learn more](https://developer.mastercard.com/unified-installments/documentation/experience-design-guide/installments-solutions-for-existing-cards/prepare-for-launch/go-live-checklist/index.md)

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