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An ASP.NET Core app is deployed on Azure App Service. The team wants a parallel staging environment that can be swapped to production atomically with zero downtime. Which feature provides this?
ARestarting the App Service plan during deployment
BDisabling continuous deployment
CRecreating the App Service from scratch every release
DDeployment slots with slot swap
Answer & Solution
Correct answer: D. Deployment slots with slot swap
App Service deployment slots allow staging + production swap with warmup. The other options destroy uptime or remove automation.
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