AzureAzure App ConfigurationManagement

`azurerm_app_configuration` cost estimation

A managed store for application settings and feature flags. Priced as a flat daily fee on the Standard tier, with a genuinely free tier.

An azurerm_app_configuration centralizes application settings and feature flags so you don't scatter config across services. The pricing is tier-based and simple: a flat daily fee, not per-request metering for the core service.

The Free tier costs nothing and covers a single store with modest request and storage limits, fine for small apps and development. The Standard tier is a flat ~$1.20/day (about $36/month) per store and adds higher request limits, more keys, geo-replication, and an SLA. Standard also includes a daily allotment of requests; overage requests bill a small per-10,000 fee, rarely material.

c3x reads the sku and prices the Standard daily fee at ~30 days/month; the Free tier estimates to zero. Overage requests are a usage-based dimension supplied in c3x-usage.yml. The decision is essentially Free vs Standard: stay Free until you need the higher limits, geo-replication, or SLA, then it's a flat, predictable $36/month per store.

Terraform example

A minimal but realistic configuration that C3X can estimate.

resource "azurerm_app_configuration" "settings" {
  name                = "app-settings"
  resource_group_name = azurerm_resource_group.app.name
  location            = "eastus"
  sku                 = "standard"

  identity {
    type = "SystemAssigned"
  }
}

Pricing dimensions

What you actually pay for when you provision azurerm_app_configuration.

Dimension	Unit	What's being charged
Store (Standard)	per day	Flat daily fee for a Standard store. c3x reads sku and prices ~30 days/month. Free tier is $0. $1.20/day (~$36/month) Standard
Overage requests	per 10,000 requests	Requests beyond the Standard daily allotment. Usually negligible; usage-based.

Sample C3X output

Example output from c3x estimate (Standard store):

azurerm_app_configuration.settings
└─ Store (Standard)           30  days    $36.00

OVERALL TOTAL                            $36.00

Optimization tips

Common ways to reduce azurerm_app_configuration cost without changing the workload.

Use the Free tier for dev and small apps

$36/month per store

The Free tier covers a single store with modest limits at no cost. For development, internal tools, and small apps it's sufficient, no need to pay for Standard.

Move to Standard only for limits, geo-replication, or SLA

$36/month until needed

Standard's ~$36/month buys higher request limits, more keys, geo-replication, and an SLA. Upgrade when you actually hit a Free-tier ceiling, not preemptively.

Consolidate stores per environment

Per avoided store

Each Standard store is a separate ~$36/month fee. Using labels and key prefixes within one store per environment, rather than many stores, avoids duplicate fees.

FAQ

How does c3x estimate App Configuration cost?

It reads the sku and prices the Standard daily fee (~$1.20/day) at ~30 days/month. The Free tier estimates to zero. Overage requests beyond the daily allotment are usage-based.

Is the Free tier genuinely free?

Yes. The Free tier provides one store with modest request and storage limits at no charge. c3x estimates it at zero. It's suitable for development and small applications.

What does Standard add for ~$36/month?

Higher request limits, more keys/values, geo-replication for resilience, and an availability SLA. It's a flat per-store daily fee, not per-request metering.

Are requests billed?

Standard includes a generous daily request allotment; only overage beyond it bills a small per-10,000 fee, which is usually negligible. The flat daily store fee dominates.

Should I use one store or many?

Generally one store per environment, organized with labels and key prefixes. Each Standard store is a separate fee, so consolidating avoids paying $36/month multiple times.