Cloud Custodian vs ServiceNow Event Management

Cloud Custodian manages cloud resources through policies written in YAML. Each policy names a resource type, filters for selecting resources, and actions to apply to matches. It supports security policy enforcement, compliance, tag policies, cleanup of unused resources, and cost management for AWS, Azure, and Google Cloud Platform resources. Policies can respond to provider events through serverless features or run on a cron schedule. Users can validate policies and preview matching resources in dry-run mode before actions execute. Runs can produce policy metrics, structured resource records, and logs for cloud metrics, storage, and logging services. Documented event connections include AWS CloudWatch Events and Config Rules, Azure EventGrid, and GCP AuditLog and Pub/Sub. Installation is documented for Linux, macOS, and Windows, with Docker and Kubernetes operation also described. Kubernetes, Tencent Cloud, and OpenStack support are in beta; Terraform integration is in alpha. Cloud Custodian is free at free and open source under Apache 2.0. An AWS constraint is that event-triggered policies run only in the same region and account, while periodic policies may run elsewhere.

ServiceNow Event Management collects operational events from multiple sources, analyzes their causes, and turns them into alerts that teams can group and act on to maintain system health. It is available with IT Operations Management and runs through web and API platforms. Events can arrive directly or through a MID Server, SNMP trap, or email using push or pull integrations. Listed connectors include Datadog, Dynatrace, Azure Monitor, SolarWinds, Kafka, Zabbix, Nagios, and IBM Netcool. Event correlation supports deduplication, enrichment, routing, and suppression, and users can preview rule changes before production deployment. Generative AI extracts alert details, simplifies technical language, and presents a probable root cause. Mapping events to the CMDB shows service impact and services at risk. Alerts can trigger workflows such as service restarts or escalation. Pricing is paid and available on request.