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Cost Estimates
Avinash Roy edited this page Dec 30, 2022
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The estimate below assumes:
- 500 users in the tenant
- Each user performs 5 add, update or delete operations per day.
- Each user uses messaging extension 25 times/week.
The recommended SKUs for a production environment are:
- Congnitive Service for Language (Custom Question Answering): Standard (S)
- App Service: Standard (S2)
- Azure Search: Basic
- Create up to 14 knowledge bases
- The Azure Search service cannot be upgraded once it is provisioned, so select a tier that will meet your anticipated needs.
Number of QnA queries: 500 users * 5 questions/user/day * 30 (number of days in a month) = 75000 questions/month
Data storage: 1 GB max
Table data operations:
- Configuration
- (2 reads/question * 75000 questions) + (1 read/escalation * 75000 escalations) + (1 read/update * 2 updates/ticket * 75000 tickets) = 375000 reads
- (1 write/update * 3 updates/ticket * 75000 tickets) = 225000 writes
Blob data operations:
- Blob storage is called when messaging extension is used.
- Total number of read calls in storage = 4 calls/hour(Azure Function) * 24 hours/day * 30 days = 2880
- Total number of write calls in storage = 4 calls/hour(Azure Function) * 24 hours/day * 30 days = 2880
IMPORTANT: This is only an estimate, based on the assumptions above. Your actual costs may vary.
Prices were taken from the Azure Pricing Overview on 09 November 2022, for the West US 2 region.
Use the Azure Pricing Calculator to model different service tiers and usage patterns.
| Resource | Tier | Load | Monthly price |
|---|---|---|---|
| Storage account (Table) | Standard_LRS | < 1GB data, 75,000 operations | $0.05 + $0.01 = $0.06 |
| Storage account (Blob) | Standard_LRS | < 1GB data, 5,000 write operations, 5,000 read operations | $0.05 |
| Bot Channels Registration | F0 | N/A | Free |
| App Service Plan | S2 | 744 hours | $148.8 |
| App Service (Messaging Extension) | - | (charged to App Service Plan) | |
| Application Insights (Messaging Extension) | - | < 5GB data | (free up to 5 GB) |
| App Service (Configuration) | - | (charged to App Service Plan) | |
| Application Insights (Configuration) | - | < 5GB data | (free up to 5 GB) |
| Question answering Cognitive Service | S | 0-2.5M text records | $1.50 per 1,000 text records |
| Azure Search | B | $75.14 | |
| App Service (Question Answering) | F0 | (charged to App Service Plan) | |
| Application Insights (Question Answering) | - | < 5GB data | (free up to 5 GB) |
| Azure Function | Dedicated | 4 executions/hour * 24 hours/day * 30 days = 2880 executions | (free up to 1 million executions) |
| Total | $225.55 |