# 2100 03 Des Cost Estimate 6189dd2e > Azure Cost Estimate: static-webapp-test - Skill: `tools-only/2100-03-des-cost-estimate-6189dd2e` (Agent Skill, multi-file: 3 files) - Install (CLI): `npx skillmds@latest add tools-only/2100-03-des-cost-estimate-6189dd2e` - Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/2100-03-des-cost-estimate-6189dd2e/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: DevOps & Infra - Author: tools-only (https://skillmd.com/u/tools-only) - Updated: 2026-09-22 - Page: https://skillmd.com/skills/tools-only/2100-03-des-cost-estimate-6189dd2e --- # Azure Cost Estimate: static-webapp-test **Generated**: 2026-01-12 **Region**: swedencentral (Sweden Central) **Environment**: Development **MCP Tools Used**: azure_price_search **Architecture Reference**: [Architecture Assessment](./02-architecture-assessment.md) --- ## ๐Ÿ’ฐ Cost At-a-Glance > **Monthly Total: ~$15** | Annual: ~$180 > > ``` > Budget: $50/month (soft) | Utilization: 30% (~$15 of $50) > ``` > > | Status | Indicator | > | ----------------- | ------------------------------------- | > | Cost Trend | โžก๏ธ Stable | > | Savings Available | ๐Ÿ’ฐ $0/year (already using free tiers) | > | Compliance | โœ… None (internal tool) | --- ## โœ… Decision Summary - โœ… Approved: Single-region, cost-optimized dev/test workload; keep SWA/Functions on free tiers - โณ Deferred: Private endpoints, multi-region DR, dedicated always-warm compute - ๐Ÿ” Redesign Trigger: If this becomes production-critical or traffic increases materially, SQL tier and SWA tier change **Confidence**: Medium | **Expected Variance**: ยฑ25% (SQL tier/usage and logs are the primary uncertainty) --- ## ๐Ÿ” Requirements โ†’ Cost Mapping | Requirement | Architecture Decision | Cost Impact | Mandatory | | ------------------------------ | -------------------------------- | ------------ | --------- | | Internal tool, low criticality | Single region | Baseline | Yes | | ~$50/month soft budget | SWA Free + Functions Consumption | -$9/month ๐Ÿ“‰ | Yes | | Basic availability target | SQL S0 baseline + alerts | Baseline | Yes | ## ๐Ÿ“Š Top 5 Cost Drivers | Rank | Resource | Monthly Cost | % of Total | Trend | | ---- | -------------------------------------------- | ------------ | ---------- | ----- | | 1๏ธโƒฃ | Azure SQL Database (S0) | $14.52 | 99% | โžก๏ธ | | 2๏ธโƒฃ | Azure Monitor alert rules (x2) | $0.20 | 1% | โžก๏ธ | | 3๏ธโƒฃ | Azure Static Web Apps (Free) | $0.00 | 0% | โžก๏ธ | | 4๏ธโƒฃ | Azure Functions (Consumption, integrated) | $0.00 | 0% | โžก๏ธ | | 5๏ธโƒฃ | Application Insights / Log Analytics (<5 GB) | $0.00 | 0% | โžก๏ธ | > ๐Ÿ’ก **Quick Win**: If usage is sporadic, evaluate Azure SQL serverless to reduce idle-time spend. --- ## Summary | Metric | Value | | ------------------- | ----------------------------- | | ๐Ÿ’ต Monthly Estimate | $15 - $18 | | ๐Ÿ“… Annual Estimate | $180 - $216 | | ๐ŸŒ Primary Region | swedencentral | | ๐Ÿ’ณ Pricing Type | List Price (PAYG) | | โญ WAF Score | 7.2/10 (avg of pillar scores) | | ๐ŸŽฏ Target Users | 10 concurrent | ### Business Context This workload is an internal tool for workflow validation testing. The architecture intentionally optimizes for cost while meeting the stated 99.9% availability target for a non-critical internal app. --- ## Architecture Overview ### Cost Distribution ```mermaid %%{init: {'theme':'base','themeVariables':{pie1:'#0078D4',pie2:'#107C10',pie3:'#5C2D91',pie4:'#D83B01',pie5:'#FFB900'}}}%% pie showData title Monthly Cost Distribution ($) "๐Ÿ’พ Data Services" : 14.52 "๐Ÿ” Security/Mgmt" : 0.20 ``` ### Key Design Decisions Affecting Cost | Decision | Cost Impact | Business Rationale | Status | | ------------------------- | ------------------ | --------------------------------------------- | -------- | | Static Web Apps Free tier | -$9/month ๐Ÿ“‰ | Stay within $50 budget for dev/test | Required | | SQL Database S0 (10 DTU) | Baseline | Lowest managed SQL tier for light usage | Required | | No private endpoints | -$7.30/endpoint ๐Ÿ“‰ | Public endpoints acceptable for internal tool | Accepted | | Single region deployment | Baseline | DR not required; cost-optimized | Required | --- ## ๐Ÿงพ What We Are Not Paying For (Yet) - Multi-region DR (active-active or warm standby) - Private endpoints for PaaS services - Dedicated always-warm compute for Functions - Higher SQL tier for sustained throughput --- ## โš ๏ธ Cost Risk Indicators | Resource | Risk Level | Issue | Mitigation | | --------------------- | ---------- | --------------------------------------- | ------------------------------------ | | Azure SQL Database S0 | ๐ŸŸก Medium | DTU saturation may require tier upgrade | Alert on DTU > 80%, review monthly | | Log ingestion | ๐ŸŸก Medium | Exceeding free ingestion increases cost | Cap verbosity; set retention targets | | Data egress | ๐ŸŸข Low | Low expected egress for internal users | Monitor monthly egress | > **โš ๏ธ Watch Item**: If transactions/day grows beyond projections, SQL tier upgrades become the primary cost driver. --- ## ๐ŸŽฏ Quick Decision Matrix _"If you need X, expect to pay Y more"_ | Requirement | Additional Cost | SKU Change | Notes | | ------------------------------- | ------------------ | --------------------------------- | ------------------------------------- | | Production-ready SWA features | +$9/month | Static Web Apps: Free -> Standard | Staging/enterprise features | | Higher DB throughput | +$15/month (est.) | SQL: S0 -> S1 | Use when DTU is consistently high | | Dedicated / always-warm compute | +$120/month (est.) | Functions: Consumption -> Premium | Avoid for this budget unless required | --- ## ๐Ÿงฉ Change Control | Change Request | Delta | Notes | | ------------------------------------- | ------------------ | ------------------------------------------- | | Promote to production (SWA Standard) | +$9/month | Enables production SWA features | | Upgrade DB tier (S0 -> S1) | +$15/month (est.) | Triggered by sustained DTU saturation | | Dedicated compute (Functions Premium) | +$120/month (est.) | Only if strict latency/always-warm required | --- ## ๐Ÿ’ฐ Savings Opportunities > ### Total Potential Savings: $0/year > > This design already uses free/lowest tiers aligned to the requirements. ### Additional Optimization Strategies | Strategy | Potential Savings | Effort | Notes | | --------------------------------------- | ----------------- | --------- | ---------------------------------------------- | | Keep SWA on Free for dev/test | $9/month | ๐ŸŸข Low | Upgrade only if production features are needed | | Reduce log ingestion | Variable | ๐ŸŸก Medium | Avoid verbose logs; tune sampling | | Evaluate SQL serverless (if idle-heavy) | Variable | ๐ŸŸก Medium | Only beneficial if workload is frequently idle | --- ## Detailed Cost Breakdown ### ๐Ÿ’ป Compute Services | Resource | SKU | Qty | $/Hour | $/Month | Notes | | --------------- | ----------- | --- | ------ | ------- | ---------------------------------------------------------- | | Static Web Apps | Free | 1 | - | $0.00 | Pricing not returned for Free tier via MCP query | | Azure Functions | Consumption | 1 | - | $0.00 | Integrated with SWA; usage expected to stay in free grants | **๐Ÿ’ป Compute Subtotal**: ~$0.00/month ### ๐Ÿ’พ Data Services | Resource | SKU | Config | $/Unit | $/Month | Notes | | ------------------ | ----------- | --------- | ----------- | ------- | ------------------------ | | Azure SQL Database | S0 (10 DTU) | Single DB | $0.4839/day | $14.52 | $0.4839 \* 30 days (MCP) | **๐Ÿ’พ Data Subtotal**: ~$14.52/month ### ๐Ÿ” Security/Management | Resource | SKU | Config | $/Unit | $/Month | Notes | | ------------- | ------ | ------- | ----------- | ------- | ---------------------------------------------------------- | | Azure Monitor | Alerts | 2 rules | $0.10/month | $0.20 | MCP shows multiple alert prices; using $0.10/rule estimate | **๐Ÿ” Security/Management Subtotal**: ~$0.20/month --- ## ๐Ÿ“‹ Monthly Cost Summary | Category | Monthly Cost | % of Total | Trend | | ---------------- | ------------ | ---------- | ----- | | ๐Ÿ’ป Compute | $0.00 | 0% | โžก๏ธ | | ๐Ÿ’พ Data Services | $14.52 | 99% | โžก๏ธ | | ๐Ÿ” Security/Mgmt | $0.20 | 1% | โžก๏ธ | | **Total** | **~$14.72** | 100% | | ``` Cost Distribution: ๐Ÿ’พ Data โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘ 99% ๐Ÿ” Sec/Mgmt โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 1% ๐Ÿ’ป Compute โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘ 0% ``` --- ## ๐Ÿงฎ Base Run Cost vs Growth-Variable Cost | Cost Type | Drivers | Examples | How It Scales | | --------------- | ----------- | ---------------------- | ---------------------------- | | Base run | fixed SKUs | SQL S0 | step-changes (tier upgrades) | | Growth-variable | usage-based | logs, alerting, egress | increases with users/traffic | --- ## ๐ŸŒ Regional Comparison | Region | SQL S0 Cost | vs. Primary | Data Residency | Recommendation | | ------------------ | ----------- | ----------- | ---------------- | -------------------------------- | | swedencentral | $14.52/mo | Baseline | EU (Sweden) โœ… | **Selected** | | germanywestcentral | $14.52/mo | +0.0% | EU (Germany) | Alternative EU option | | westeurope | $14.52/mo | +0.0% | EU (Netherlands) | Alternative EU option | | eastus | $14.52/mo | +0.0% | US | Lowest-latency for US-only users | > ๐Ÿ’ก **Decision**: swedencentral selected for EU preference and default region standards. --- ## ๐Ÿ”ง Environment Strategy (FinOps) - Production: Not applicable (design is dev/test). - Non-prod: Keep SWA/Functions on free tiers; only upgrade SQL tier when DTU saturation persists. --- ## ๐Ÿ”„ Environment Cost Comparison | Environment | Monthly Cost | vs. Dev | Notes | | ------------------------ | ------------ | -------- | ------------------------------------------- | | Development | $14.72 | Baseline | Free/lowest tiers | | Staging | $14.72 | 0% | Same footprint (single environment pattern) | | Production (if upgraded) | ~$23.72 | +61% | SWA Standard (+$9) | --- ## ๐Ÿ›ก๏ธ Cost Guardrails | Guardrail | Threshold | Action | | ------------------- | ----------------- | ------------------------------------------- | | Budget alert | 80% / 100% of $50 | Notify / require approval to upgrade tiers | | SQL DTU utilization | >80% sustained | Evaluate S0 -> S1 or serverless | | Log ingestion | >1 GB/week | Tune verbosity, sampling, and retention | | Data egress | >50 GB/month | Investigate caching/CDN and traffic sources | --- ## ๐Ÿ“ Testable Assumptions | Assumption | Why It Matters | How to Measure | Threshold / Trigger | | ------------------ | -------------------------- | ------------------- | ------------------- | | Logs <= 5 GB/month | avoids ingestion costs | Log Analytics usage | >5 GB/month | | SQL S0 sufficient | prevents tier upgrade | SQL DTU metrics | >80% sustained | | Low egress | keeps networking costs low | Azure Cost Mgmt | >50 GB/month | --- ## ๐Ÿ“ Assumptions - **SQL billing basis**: $0.4839/day for SQL Database S0 in swedencentral (MCP) x 30 days - **Alerting**: 2 alert rules at ~$0.10/month each (estimate; MCP returned multiple alert prices) - **Logs**: assumed <= 5 GB/month to stay within common free grants - **Usage**: 730 hours/month for always-on services - **Prices queried**: 2026-01-12 via Azure Pricing MCP - **Pricing**: Azure retail list prices (pay-as-you-go) --- ## ๐Ÿ“Š Pricing Data Accuracy > **๐Ÿ“Š Data Source**: Prices retrieved from Azure Retail Prices API via Azure Pricing MCP > > โœ… **Included**: Retail list prices (PAYG) > > โŒ **Not Included**: EA discounts, CSP pricing, negotiated rates, Azure Hybrid Benefit > > ๐Ÿ’ก For official quotes, validate with the Azure Pricing Calculator --- ## ๐Ÿ”— References - [Azure Pricing Calculator](https://azure.microsoft.com/pricing/calculator/) - [Azure Retail Prices API](https://learn.microsoft.com/en-us/rest/api/cost-management/retail-prices/azure-retail-prices) - [Architecture Assessment](./02-architecture-assessment.md)