Telco Industry - Incident Detection and Response Alarming Best Practices
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The intention of this documentation is to provide the building blocks to create critical CloudWatch alarms which are fit for onboarding to Incident Detection and Response. It contains specific alarm best practices for AWS Services commonly used in the Telco Industry.
Overview
Telecommunications organizations use AWS primarily as an enterprise SaaS/application platform, running subscriber-facing applications (BSS portals, self-service apps), security platforms, analytics pipelines, and collaboration tools. A smaller subset run connectivity-dependent 5G network functions bridged via Direct Connect. End users depend on always-on connectivity. "Down" means failed subscriber transactions, degraded service portals, or severed connectivity between on-premises telecom infrastructure and cloud-hosted applications.
Operational characteristics for Incident Detection and Response:
- 24/7 always-on, zero-tolerance for outages — Telecom networks serve voice, data, and subscriber management around the clock. Even brief degradation impacts millions of subscribers and may trigger regulatory reporting obligations.
- Enterprise consumption is the dominant pattern — Most telco customers onboarded to IDR use AWS as a standard enterprise platform (EKS, ALB, RDS, MSK) rather than running telco-specific network functions. Their workloads resemble any large SaaS provider.
- Two distinct consumption patterns — The majority run enterprise/SaaS workloads (security platforms, analytics, subscriber portals). A smaller subset run connectivity-dependent 5G network functions behind Direct Connect with Local Zones. Both patterns can exist simultaneously within the same customer.
Baseline Alarms
For alarm configurations (metric names, thresholds, periods, statistics), see the individual IDR recommended AWS service articles linked below. This page identifies which services matter for telco workloads and why.
Critical Path Architecture
Telco workloads follow two distinct critical paths. Path 1 is the more common pattern among IDR-onboarded telco customers.
Path 1 — Enterprise / SaaS Workloads (Most Common)
End User --> Route 53 --> ALB --> EKS / ECS
--> Data Store (RDS / ElastiCache / MSK)
Path 2 — Connectivity-Dependent Workloads (5G Network Functions / ISV Platforms)
On-Premises 5G Core --> Direct Connect --> Transit Gateway
--> Local Zones / AZs --> EKS / EC2 --> NLB --> Backend Services
Critical Path Services
| Service | Role in Workload | Why It Matters |
|---|---|---|
| EKS | Runs containerized workloads — security platforms, microservices, subscriber apps, network functions | Pod/node failures degrade or halt request handling |
| EC2 | Instance-based applications, ISV platforms, network functions | Instance failures directly impact application availability |
| Elastic Load Balancer | Entry point for subscriber portals, SaaS applications, APIs | Single point of failure for all application traffic |
| Route 53 | DNS resolution for subscriber-facing applications | DNS failure = complete subscriber-facing outage regardless of backend health |
| RDS | Subscriber databases, billing records, configuration stores | Unavailability = failed provisioning, billing errors, session lookup failures |
| ElastiCache | Session caching, real-time lookups, low-latency data access | Cache failures cause latency spikes and session loss for subscriber-facing apps |
| Amazon MSK | Event streaming for real-time subscriber data pipelines | Consumer lag or broker failures delay real-time data processing on the critical path |
| Direct Connect | Physical connectivity between on-premises telecom infrastructure and AWS (Path 2) | Connection loss = complete isolation of cloud-hosted workloads from physical network |
| Transit Gateway | Network routing hub connecting VPCs, on-premises, and multi-region (Path 2) | Blackhole/no-route drops sever inter-VPC traffic; workloads lose reachability |
| CloudFront | CDN and edge delivery for subscriber portals and streaming | Delivery failures degrade subscriber experience across all geographies |
Industry-Specific Threshold Considerations
| Service | Consideration | Reason |
|---|---|---|
| Direct Connect | TreatMissingData = Breaching for all connection metrics | Missing data from a DX connection likely means the connection is down — this IS the failure mode |
| VPC Transit Gateway | TreatMissingData = Breaching for traffic metrics | Zero traffic through TGW in a telco workload indicates routing failure, not idle state |
| EKS | Tighter pod restart and scaling thresholds | Network functions and subscriber apps must maintain session continuity; pod churn drops active sessions |
| ALB / NLB | Tighter latency thresholds than default | Real-time subscriber services require low-latency response; default thresholds are too loose for telco SLOs |
| EC2 | StatusCheckFailed alarms with short evaluation periods | Bare-metal network functions cannot tolerate extended instance degradation |
Reference Architectures
Industry-Specific Operational Notes
- Enterprise pattern dominates — Most telco customers onboarded to IDR run standard enterprise workloads (EKS, ALB, RDS, MSK). The critical path is generic: Route 53 → ALB → EKS → Data Store. Industry-specific alarming (DX, TGW, Local Zones) only applies to the subset running 5G network functions.
- Direct Connect is critical only for 5G/network-function workloads — For customers running network functions on AWS, DX IS the network path. A DX failure is equivalent to a fiber cut. For enterprise-pattern telco customers, DX may not be in the architecture at all.
- Multi-region and edge deployments — 5G workloads span multiple AWS Regions and Local Zones for latency and redundancy. Transit Gateway cross-region peering health is operationally critical for these deployments.
- Seasonal and event-driven spikes — Major sporting events, concerts, and holidays drive massive traffic spikes in specific geographic areas. Capacity alarms should account for predictable peaks.
- Regulatory obligations — Telecom regulators (FCC, Ofcom, TRAI) require outage reporting within defined timeframes. Rapid detection via critical path alarms directly impacts regulatory compliance.
- Language
- English
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