Imported sequence

Imported sequence Imported sequence Imported from Mermaid; verify icon choices alt [payment approved] [declined] POST /orders 1. Customer → API Management (POST /orders)1 invoke 2. API Management → Orders Function App (invoke)2 write order 3. Orders Function App → Cosmos DB (write order)3 ok OrderConfirmed event 4. Orders Function App → API Management (OrderConfirmed event)4 402 validate 5. Orders Function App → Orders Function App (validate)5 201 Created Customer (Users) Customer API Management (API Management Services) API Management Orders Function App (Function Apps) Orders Function App Cosmos DB (Azure Cosmos DB) Cosmos DB

Flow

  1. 1Customer → API Management (POST /orders)
  2. 2API Management → Orders Function App (invoke)
  3. 3Orders Function App → Cosmos DB (write order)
  4. 4Orders Function App → API Management (OrderConfirmed event)
  5. 5Orders Function App → Orders Function App (validate)

Cost estimate eastus · price list as of 2026-10-02 · indicative — some usage is assumed

$758per month
$9,091per year
3/4components priced
0not priced (see below)

Public pay-as-you-go list prices from the Azure Retail Prices API (USD). Excludes taxes, support plans, Reservations, Savings Plans, Spot and enterprise or EA discounts, and data transfer unless a node sets egressGbPerMonth. Free grants are included where the meter has a free tier. Monthly = 730 hours. Not a quote: confirm with the Azure Pricing Calculator.

By category

Integration$687 · 91%
Data and storage$70.90 · 9%
Compute$0.00 · 0%

By component click a row to highlight it on the diagram

ComponentServiceStatus$ / monthLine items
API ManagementAPI Management Servicesestimated$687
1 line
  • Standard unit-hours: 730 1 Hour × $0.9407 = $686.711
Cosmos DBAzure Cosmos DBestimated$70.90
2 lines
  • Provisioned 100 RU/s units (hours): 7,300 1/Hour × $0.008 = $58.40
  • Transactional storage (GB-month): 50 1 GB/Month × $0.25 = $12.50

Single-region writes, standard provisioned or autoscale throughput. Serverless, multi-region writes, backup and analytical storage are not modelled.

Not priced

  • Orders Function App — estimated: Consumption plan; the monthly free grant is included in the tiered meters.

Assumptions 11 defaulted — replace them with your own numbers in each node's usage

ComponentAssumptionValueSource
API Managementtierstandardassumed
API Managementunits1assumed
Orders Function Appplanconsumptionassumed
Orders Function ApprequestsPerMonth1000000assumed
Orders Function AppavgDurationMs200assumed
Orders Function AppmemoryMb512assumed
Cosmos DBmodeprovisionedassumed
Cosmos DBruPerSecond1000assumed
Cosmos DBstorageGb50assumed
Cosmos DBhoursPerMonth730assumed
Cosmos DBregions1assumed

Sensitivity & what-if

$758at 1× traffic
$783at 3× traffic
$882at 10× traffic

No what-if options apply to these services.

Price list provenance

Retrieved 2026-10-02T10:01:47.868Z from the public Azure Retail Prices API. Latest price effective dates per service:

API Management 2024-12-01 · Functions 2024-12-01 · Azure Cosmos DB 2026-10-01

Only public pay-as-you-go list prices are used. This is not a quote — confirm in the Azure Pricing Calculator.