🧼 Metric #5: Custom App-Level Latency (e.g., /health route) If your app emits latency metrics via CloudWatch Embedded Metric Format (EMF):

latency.tf

resource "awscc_applicationsignals_service_level_objective" "custom_app_latency" {
  name        = "custom-app-latency-slo"
  description = "Track app-reported latency (e.g., /health or critical path)"

  sli = {
    comparison_operator = "LessThan"
    metric_threshold    = 200 # 200ms

    sli_metric = {
      metric_data_queries = [{
        id = "customlatency"
        metric_stat = {
          metric = {
            namespace   = "MyApp/Performance"
            metric_name = "HealthEndpointLatency"
            dimensions = [
              {
                name  = "Service"
                value = "MyFargateService"
              }
            ]
          }
          period = 300
          stat   = "p95"
        }
      }]
    }
  }

  goal = {
    attainment_goal = 99.5
    interval = {
      rolling_interval = {
        duration      = 7
        duration_unit = "DAY"
      }
    }
  }

  burn_rate_configurations = [
    { look_back_window_minutes = 60 },
    { look_back_window_minutes = 1440 }
  ]
}