How does the quota for Azure App Shared D1 work?

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How does the quota for Azure App Shared D1 work?

Kit 20

I would like to understand how the shared CPU quota works. In the case of the Shared D1 instance, the quota is 240 minutes (4 hours) per day. The confusing part for me is that there is an hourly charge ($0.013) and a monthly charge ($9.49) My understanding is that based on a 4hr quota, wouldn't that monthly cost work out to be (4hrs x $0.013 x 31 days) = $1.612?

Appreciate any clarification. Thanks.

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TP 123.5K Volunteer Moderator

Hi,

Shared D1 SKU is charged hourly ($0.013/hour). For calculation purposes, there are an average of 730 hours each month over the course of a year. If you multiply $0.013 x 730 = $9.49/month

So in effect you are charged per hour, and if your plan exists for a full month this results in average charge per month of $9.49.

Shared D1 SKU has CPU Time (Day) Quota of 240 minutes. This is the amount of time the CPU can be used total each day before the app will be automatically stopped.

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It also has a CPU Time (Short) Quota of 3 minutes. This is the total amount of time the CPU can be used in a 5 minute interval.

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You may view the above by navigating to Web App in Azure portal - App Service plan - Quotas blade.

Please see article below for more details on App Service quotas and enforcement:

Azure App Service quotas and metrics

https://learn.microsoft.com/en-us/azure/app-service/web-sites-monitor#-quotas

Please click Accept Answer and upvote if the above was helpful.

Thanks.

-TP

Kit 20 Reputation points

2025-06-06T02:51:26.08+00:00

Thanks TP for your reply.

It baffles me that the shared plan has so many controls in place: charges by per App (not app plan) and CPU quotas but its charges continue to accumulate even when the app is stopped. I understand that as with other App Service plans you still get charge with a stopped app. But given that you totally have not access to the app when the quota is reached, why doesn't Azure stop charging for its hourly use?
TP 123.5K Reputation points Volunteer Moderator

2025-06-06T03:12:29.79+00:00

But given that you totally have not access to the app when the quota is reached, why doesn't Azure stop charging for its hourly use?

I understand what you mean. They haven't publicly disclosed their reasons for why the plan keeps charging even if quota is reached. It's likely part art/part business decision like most product/service pricing decisions.

The other thing is if you are hitting the quotas then you typically would switch at least to Basic. Having an app that regularly shuts down due to quota is a bad situation.

Free/Shared are really only intended for test/very low usage apps.
Bhargavi Naragani 4,720 Reputation points Microsoft External Staff Moderator

2025-06-09T08:29:14.6266667+00:00

Hi Kit,
Just checking in to see if the provided answer helped. If it did, please click "Accept the answer” and Yes for the answer. So, it can benefit other community members reading this thread. If you have any further queries, do let us know.
Kit 20 Reputation points

2025-06-09T13:20:16.29+00:00

Can anyone from Microsoft shed some light regarding the doubts I mentioned above wrt setting a quota but yet continue to charge for a stopped app?
Bhargavi Naragani 4,720 Reputation points Microsoft External Staff Moderator

2025-06-09T16:29:44.4866667+00:00

Hi Kit,

You're correct in noting that the D1 shared plan charges hourly even when the app is stopped due to CPU quota exhaustion. This is because billing is based on app existence, not active usage. The shared infrastructure is always provisioned for your app while it's on the plan, and the quota mechanism simply limits how much CPU time you can consume.

As mentioned by @TP, if you’re routinely hitting the quota, it’s a good indication to consider scaling to a Basic or higher plan. Alternatively, if your app is low-use or experimental, the Free tier might be better.

Refer to the below documents for better understanding:
https://learn.microsoft.com/en-us/azure/app-service/overview-hosting-plans
https://learn.microsoft.com/en-us/azure/app-service/web-sites-monitor#-quotas
https://azure.microsoft.com/en-us/pricing/details/app-service/windows/
https://learn.microsoft.com/en-us/azure/app-service/overview#free-and-shared-hosting-plans

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How does the quota for Azure App Shared D1 work?

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