# Reliability > An index and topic collection covering site reliability engineering (SRE), reliability platforms, service level objectives (SLOs), error budgets, chaos engineering, resilience testing, and incident response. Reliability platforms help teams define and measure reliability targets, intentionally in... This is the **Reliability** topic area of [API Evangelist](https://apievangelist.com) — a network of focused knowledge bases drawn from 16 years of independent API research by Kin Lane. Browse all areas at https://apievangelist.com/areas/. ## Services & Tools - [Amazon Fault Injection Simulator](https://providers.apis.io/providers/amazon-fault-injection-simulator/) (repo: https://github.com/api-evangelist/amazon-fault-injection-simulator) - [Better Stack](https://providers.apis.io/providers/betterstack/) (repo: https://github.com/api-evangelist/betterstack) - [Blameless](https://providers.apis.io/providers/blameless/) (repo: https://github.com/api-evangelist/blameless) - [Chaos Mesh](https://providers.apis.io/providers/chaos-mesh/) (repo: https://github.com/api-evangelist/chaos-mesh) - [Chronosphere](https://providers.apis.io/providers/chronosphere/) (repo: https://github.com/api-evangelist/chronosphere) - [Cortex](https://providers.apis.io/providers/cortex/) (repo: https://github.com/api-evangelist/cortex) - [FireHydrant](https://providers.apis.io/providers/firehydrant/) (repo: https://github.com/api-evangelist/firehydrant) - [Gremlin](https://providers.apis.io/providers/gremlin/) (repo: https://github.com/api-evangelist/gremlin) - [Harness](https://providers.apis.io/providers/harness/) (repo: https://github.com/api-evangelist/harness) - [Incident.io](https://providers.apis.io/providers/incident-io/) (repo: https://github.com/api-evangelist/incident-io) - [Lightstep](https://providers.apis.io/providers/lightstep/) (repo: https://github.com/api-evangelist/lightstep) - [Litmus](https://providers.apis.io/providers/litmus/) (repo: https://github.com/api-evangelist/litmus) - [Moogsoft](https://providers.apis.io/providers/moogsoft/) (repo: https://github.com/api-evangelist/moogsoft) - [Nobl9](https://providers.apis.io/providers/nobl9/) (repo: https://github.com/api-evangelist/nobl9) - [OneUptime](https://providers.apis.io/providers/oneuptime/) (repo: https://github.com/api-evangelist/oneuptime) - [OpsGenie](https://providers.apis.io/providers/opsgenie/) (repo: https://github.com/api-evangelist/opsgenie) - [OpsLevel](https://providers.apis.io/providers/opslevel/) (repo: https://github.com/api-evangelist/opslevel) - [PagerDuty](https://providers.apis.io/providers/pagerduty/) (repo: https://github.com/api-evangelist/pagerduty) - [Rootly](https://providers.apis.io/providers/rootly/) (repo: https://github.com/api-evangelist/rootly) - [SIGNL4](https://providers.apis.io/providers/signl4/) (repo: https://github.com/api-evangelist/signl4) - [Splunk On-Call (VictorOps)](https://providers.apis.io/providers/victorops/) (repo: https://github.com/api-evangelist/victorops) - [Squadcast](https://providers.apis.io/providers/squadcast/) (repo: https://github.com/api-evangelist/squadcast) - [Statuspage](https://providers.apis.io/providers/statuspage/) (repo: https://github.com/api-evangelist/statuspage) - [xMatters](https://providers.apis.io/providers/xmatters/) (repo: https://github.com/api-evangelist/xmatters) - [Zenduty](https://providers.apis.io/providers/zenduty/) (repo: https://github.com/api-evangelist/zenduty) ## Common Features - **Service Level Objectives and Error Budgets**: Reliability platforms like Nobl9, Chronosphere, and OpenSLO let teams define service level indicators (SLIs), set service level objectives (SLOs), and track error budgets to balance reliability work against feature delivery. - **Chaos Engineering and Fault Injection**: Chaos engineering tools like Gremlin, Chaos Mesh, Litmus, and AWS Fault Injection Simulator deliberately inject failures into systems to validate resilience and uncover hidden weaknesses before they cause incidents. - **Incident Response and On-Call Orchestration**: Incident response platforms like PagerDuty, OpsGenie, Incident.io, FireHydrant, and Rootly orchestrate on-call rotations, alert routing, escalation policies, and incident war rooms across distributed teams. - **Runbook Automation and Response Workflows**: Reliability platforms automate runbooks and response workflows that trigger on incidents, capture context from connected systems, and guide responders through remediation steps. - **Blast Radius Reduction and Safety Controls**: Chaos and incident tools include safeguards such as halt conditions, scope limits, and automated rollback to contain the blast radius of experiments and incidents. - **Blameless Post-Incident Reviews**: Platforms like Blameless, Jeli, and FireHydrant structure post-incident analysis to extract learning without assigning blame, capturing timelines, contributing factors, and follow-up actions. - **Service Standards and Reliability Scoring**: Internal developer platforms like OpsLevel and Cortex score services against reliability standards such as ownership, on-call coverage, SLO adoption, and runbook completeness. - **Status Pages and Customer Communication**: Status page platforms like Statuspage, Better Stack, and OneUptime communicate incident state and maintenance windows to customers and stakeholders in real time. ## Use Cases - **SLO-Based Alerting**: Replace threshold alerts with SLO burn-rate alerts that fire only when error budget is being consumed faster than sustainable, reducing alert fatigue while preserving signal. - **Pre-Production Resilience Testing**: Teams use Gremlin, Chaos Mesh, or AWS Fault Injection Simulator in staging environments to validate retries, timeouts, circuit breakers, and failover before production deploys. - **Game Days and Continuous Verification**: SRE teams run scheduled game days and continuous chaos experiments to verify that documented runbooks, alerting, and failover behavior still work as systems evolve. - **Incident Coordination at Scale**: PagerDuty, Incident.io, and FireHydrant coordinate large incidents across multiple teams with auto-created Slack channels, scribes, roles, and timeline capture. - **Error Budget Policy Enforcement**: When a service exhausts its error budget, automated policies in Nobl9 or Chronosphere can freeze deploys, page leadership, or trigger reliability investment until the budget recovers. - **On-Call Schedule Management**: Platforms like PagerDuty, OpsGenie, and Squadcast manage rotation schedules, overrides, and escalation policies across global teams, with integrations into chat and ticketing tools. - **Service Catalog and Reliability Standards**: OpsLevel, Cortex, and Backstage track service ownership, tier, and adherence to reliability standards like SLO coverage, on-call defined, and runbooks linked. - **Customer-Facing Status Communication**: Statuspage, Better Stack, and OneUptime provide hosted status pages that publish incident updates, scheduled maintenance, and component health to customers and subscribers. ## Related Areas - [Monitoring](https://monitoring.apievangelist.com): An index and topic collection covering API monitoring, application performance monitoring, observability, uptime moni... - [Developer Experience](https://developer-experience.apievangelist.com): This is the index of developer experience service and tooling repos being tracked by the API Evangelist network, cove... - [Microservices](https://microservices.apievangelist.com): An index of microservices architecture frameworks, service discovery, resilience, messaging, workflow orchestration, ... - [Transparency](https://transparency.apievangelist.com): An index and topic collection covering public-facing transparency surfaces across the API and platform ecosystem. Tra... - [Low Hanging Fruit](https://low-hanging-fruit.apievangelist.com): A Kin Lane / API Evangelist editorial collection of "low hanging fruit" APIs — the well-documented, easy-to-onboard, ... ## More - [Latest Reliability stories](/stories/) - [All API Evangelist topic areas](https://apievangelist.com/areas/) - [API Evangelist network index (llms.txt)](https://apievangelist.com/llms.txt)