# PERF04-BP07 - Optimize network configuration based on metrics

Best practice: PERF04-BP07
Pillar: Performance Efficiency
Source: https://wellarchitected.cloudvisor.eu/docs/performance-efficiency/perf04-bp07.html

## Implementation Guidance

"Optimize network configuration based on metrics" helps remove wasted effort, unused capacity, and inefficient patterns that degrade cost and performance outcomes. Focus on continuous tuning backed by observed workload behavior rather than one-time adjustments.

For the question "How do you configure your networking solution?", define measurable outcomes, assign owners, and review execution regularly. Integrate this practice into delivery and operations processes so improvements persist as workloads and requirements evolve.

### Key Steps

1. **Identify optimization targets**:
   - Profile current-state systems related to "Optimize network configuration based on metrics"
   - Prioritize bottlenecks and waste by business impact
   - Define target utilization and performance goals

2. **Apply targeted improvements**:
   - Implement architectural, configuration, or code-level optimizations
   - Use staged rollout to verify gains and limit risk
   - Capture before-and-after metrics for each change

3. **Sustain gains over time**:
   - Automate periodic review and regression detection
   - Retire ineffective optimizations and scale successful patterns
   - Continuously refine targets as workload characteristics evolve

## Risk / Impact

**Level of risk if not implemented**: Medium

**Impact**: Without this best practice, workloads typically accumulate inefficiencies and execution drift that increase failure probability over time. Problems often surface during traffic spikes, major releases, or dependency failures.

**Benefits of implementation**:
- More predictable operational and engineering outcomes
- Better alignment between architecture decisions and business goals
- Continuous improvement through measurable feedback loops

## AWS Services to Consider

<div class="aws-service">
  <div class="aws-service-content">
    <h4>Amazon VPC</h4>
    <p>Defines network segmentation, routing, and connectivity controls for workloads.</p>
  </div>
</div>

<div class="aws-service">
  <div class="aws-service-content">
    <h4>Elastic Load Balancing</h4>
    <p>Distributes traffic across healthy targets for better availability and response time.</p>
  </div>
</div>

<div class="aws-service">
  <div class="aws-service-content">
    <h4>Amazon CloudFront</h4>
    <p>Caches content at edge locations to reduce latency and origin load.</p>
  </div>
</div>

<div class="aws-service">
  <div class="aws-service-content">
    <h4>Amazon Route 53</h4>
    <p>Provides DNS routing policies and health checks for traffic optimization.</p>
  </div>
</div>

## Related Resources

<div class="related-resources">
  <h2>Related Resources</h2>
  <ul>
    <li><a href="https://docs.aws.amazon.com/wellarchitected/latest/framework/perf-04.html">PERF04: How do you select and configure networking resources in your workload?</a></li>
    <li><a href="https://docs.aws.amazon.com/wellarchitected/latest/performance-efficiency-pillar/welcome.html">AWS Well-Architected Framework - Performance Efficiency Pillar</a></li>
    <li><a href="https://docs.aws.amazon.com/wellarchitected/latest/performance-efficiency-pillar/design-principles.html">Performance Efficiency Design Principles</a></li>
  </ul>
</div>