Cost Analysis Command

This command initiates structured cloud cost analysis following the ops-cost-optimization workflow.

Usage

/cost-analysis full general
/cost-analysis service:payment-api rightsizing
/cost-analysis account:production ri

Workflow

Step 1: Define Analysis Scope

Parse scope and focus from arguments.

Scope options:

• full - All accounts and services
• service:[name] - Specific service
• account:[name] - Specific AWS account
• tag:[key=value] - Resources with specific tag

Focus options:

• general - Comprehensive cost review
• rightsizing - Compute optimization focus
• ri - Reserved instance analysis
• anomaly - Cost anomaly investigation
• waste - Idle/unused resource detection

If not provided, ask:

• What scope should be analyzed?
• What is the primary focus?

Step 2: Dispatch Cloud Cost Optimizer

Task tool:
  subagent_type: "cloud-cost-optimizer"
  model: "opus"
  prompt: |
    COST ANALYSIS REQUEST

    **Scope:** [scope]
    **Focus:** [focus area]
    **Period:** Last 30 days (with 90-day trends)

    Please analyze:
    1. Cost breakdown by the requested scope
    2. Trend analysis (MoM, YoY if available)
    3. [Focus-specific analysis - see below]
    4. Optimization opportunities
    5. ROI calculations for recommendations

    Focus-specific requirements:
    - General: Full cost visibility + top opportunities
    - Rightsizing: Compute utilization + downsize candidates
    - RI: Coverage analysis + purchase recommendations
    - Anomaly: Unusual spend patterns + root cause
    - Waste: Idle resources + cleanup recommendations

    Output required:
    - Cost summary
    - Detailed analysis
    - Prioritized recommendations
    - Implementation roadmap

Step 3: Generate Report

Format findings into actionable report with clear recommendations.

Output Format

# Cost Analysis Report

**Scope:** [scope]
**Focus:** [focus]
**Analysis Period:** YYYY-MM-DD to YYYY-MM-DD
**Generated:** YYYY-MM-DD

## Cost Summary

**Total Spend:** $XX,XXX
**Budget:** $XX,XXX
**Variance:** [+/-X%]
**Optimization Potential:** $X,XXX/month ([X]%)

### Cost by Category

| Category | Spend | % of Total | MoM Change |
|----------|-------|------------|------------|
| [category] | $X,XXX | XX% | +X% |

## Analysis Findings

### [Focus Area] Analysis

[Detailed findings based on focus area]

## Optimization Opportunities

### Quick Wins (This Week)

| Opportunity | Savings/Month | Effort | Risk |
|-------------|---------------|--------|------|
| [opportunity] | $XXX | Low | Low |

### High Impact (This Month)

| Opportunity | Savings/Month | Effort | Risk |
|-------------|---------------|--------|------|
| [opportunity] | $X,XXX | Medium | Low |

### Strategic (This Quarter)

| Opportunity | Savings/Month | Effort | Risk |
|-------------|---------------|--------|------|
| [opportunity] | $X,XXX | High | Medium |

## ROI Analysis

| Recommendation | Monthly Savings | Implementation Cost | Payback Period |
|----------------|-----------------|---------------------|----------------|
| [rec] | $X,XXX | $X,XXX | X months |

## Implementation Roadmap

### Week 1
- [ ] [Action 1]
- [ ] [Action 2]

### Week 2-4
- [ ] [Action 3]
- [ ] [Action 4]

## Next Steps

1. Review and approve recommendations
2. Create implementation tickets
3. Schedule follow-up analysis

Focus-Specific Templates

Rightsizing Focus

Additional output:

## Rightsizing Candidates

| Instance | Current | Recommended | CPU Avg | Mem Avg | Savings |
|----------|---------|-------------|---------|---------|---------|
| [id] | [type] | [type] | XX% | XX% | $XXX/mo |

### Criteria Used
- CPU avg <40% over 14 days
- Memory avg <50% over 14 days
- No seasonal patterns requiring headroom

RI Focus

Additional output:

## Reserved Instance Analysis

### Current Coverage

| Service | On-Demand | Reserved | Coverage |
|---------|-----------|----------|----------|
| EC2 | $X,XXX | $X,XXX | XX% |

### Purchase Recommendations

| Instance Type | Quantity | Term | Payment | Savings | Break-even |
|---------------|----------|------|---------|---------|------------|
| [type] | X | 1yr | No upfront | $X,XXX/yr | Immediate |

Anomaly Focus

Additional output:

## Anomaly Investigation

### Detected Anomalies

| Date | Service | Expected | Actual | Delta | Cause |
|------|---------|----------|--------|-------|-------|
| [date] | [svc] | $XXX | $XXX | +XX% | [cause] |

### Root Cause Analysis
[Detailed investigation findings]

Related Skills

• ops-cost-optimization - Full cost optimization workflow
• ops-capacity-planning - Capacity planning (cost component)

Anti-Rationalization

Rationalization	Required Action
"Small savings not worth it"	All savings compound over time
"Can optimize later"	Later = never. Optimize now.
"Too risky to change"	Data-driven changes are low risk

---

MANDATORY: Load Full Skill

This command MUST load the skill for complete workflow execution.

Use Skill tool: ops-cost-optimization

The skill contains the complete workflow with:

• Cost breakdown analysis
• Rightsizing recommendations
• Reserved instance optimization
• Cost anomaly detection
• ROI calculation framework