1. Integration and Focus: While both PagerDuty and Sentry are incident management tools, they have distinct focuses and integrations. PagerDuty is primarily focused on managing and resolving incidents in real-time, providing comprehensive coverage for IT alerts, and integrating with various monitoring and alerting tools. On the other hand, Sentry specializes in monitoring and error tracking for software applications, focusing on capturing and diagnosing errors and exceptions in production code.
2. Alerting and Escalation: PagerDuty offers robust alerting and escalation capabilities, allowing teams to define on-call schedules, intelligent routing rules, and multiple notification channels to ensure timely incident response. Sentry, however, mainly focuses on capturing and monitoring errors and exceptions as they occur, providing real-time notifications and detailed error reports to developers for debugging and resolution.
3. Workflow and Collaboration: PagerDuty provides extensive workflow and collaboration features, enabling teams to triage, manage, and collaborate on incidents effectively. It offers incident timelines, status updates, and centralized documentation to ensure coordinated incident response. In contrast, Sentry is primarily designed for individual developers, providing tools for tracking, investigating, and resolving issues in their code. While it offers some collaboration features, such as assigning issues and commenting, its focus is more on aiding individual developers rather than facilitating team collaboration.
4. Monitoring vs. Error Tracking: PagerDuty is built to monitor and manage a wide range of IT infrastructure, including network devices, servers, applications, and cloud services. It integrates with various monitoring tools and provides a centralized platform for incident management. Sentry, on the other hand, is specifically designed for error tracking in software applications. It captures errors and exceptions from code, provides detailed stack traces, and offers insights into the root causes of issues.
5. Customization and Extensibility: With PagerDuty, teams can customize their incident management workflows, on-call schedules, escalation policies, and integration with third-party tools. It offers a flexible API and webhook integrations for extending its capabilities. Sentry, while not as focused on customization, provides flexibility in configuring error monitoring and alerting preferences. It also offers integrations with popular development tools and platforms like GitHub, Jira, and Slack.
6. Cost and Pricing Model: The cost and pricing models for PagerDuty and Sentry differ. PagerDuty typically offers pricing based on the number of users, services, and integrations required. Its pricing may increase with the number of incidents or notifications generated. In contrast, Sentry offers different pricing plans based on the number of events captured and stored, providing options for both individual developers and enterprise teams.

In Summary, PagerDuty and Sentry have key differences in integration and focus, alerting and escalation capabilities, workflow and collaboration features, monitoring vs. error tracking functionalities, customization and extensibility options, as well as cost and pricing models. Their distinct strengths make them suitable for different incident management and error tracking needs.