> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chronosphere.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Change events

When on-call engineers respond to an issue, they need to understand what changed,
where the change occurred, and when the change happened. These insights are critical
to investigating and remediating issues when they arise.

Changes Explorer displays *change events* to create a comprehensive view of all
changes in your environment. Each change event describes a change within your
environment or Chronosphere Observability Platform tenant at a specific time so you
can answer questions like *When did a particular service deploy last?* or
*Which alerts triggered in the last week?*

Change events provide an additional layer of meaning. A specific set of changes
might occur at the system level, but can be further differentiated by
[category, type, and source](/observe/enable-events/use-events#categorize-change-events-intentionally).
For example, a system-level change can be categorized as a deploy, alert, or
infrastructure event. Within a specific category, you can differentiate events. For
example, within the infrastructure category, you can add a type such as network
change, storage modification, or security update to distinguish these events.

Learn about interacting with [change events](/overview/types/change-events) in
Observability Platform.

```mermaid actions={false} theme={null}
---
title: Change events by type
---
flowchart LR
  System:::red
  System --- Infrastructure:::red
  System --- ThirdP[Third party]:::red
  System --- Alerts:::red
  System --- FFlags[Feature flags]:::red
  System --- Deploys:::red

  Infrastructure --- I1[Network change]:::redLight
  Infrastructure --- I2[Storage change]:::redLight
  Infrastructure --- I3[Kubernetes change]:::redLight

  ThirdP --- T1[PaaS issue]:::redLight
  ThirdP --- T2[Stripe issue]:::redLight

  Alerts --- A1[Monitor triggered]:::redLight
  Alerts --- A2[Muting rule stopped]:::redLight

  FFlags --- F1[New feature enabled]:::redLight

  Deploys --- D1[New code deployed]:::redLight

  Workload:::orange --- Broadcasts:::orange
  Broadcasts --- B1[New customer onboarding]:::orangeLight
  Broadcasts --- B2[Marketing event]:::orangeLight
  Broadcasts --- B3[Sporting event start]:::orangeLight

  Observability:::green --- Chronosphere:::green

  classDef red fill:#EA4747,color:#FFFFFF,stroke:#EA4747
  classDef redLight fill:#F4A3A3,color:#000000,stroke:#EA4747
  classDef orange fill:#FF9D1C,color:#FFFFFF,stroke:#FF9D1C
  classDef orangeLight fill:#FFCF8A,color:#000000,stroke:#FF9D1C
  classDef green fill:#60E684,color:#000000,stroke:#60E684

  linkStyle default stroke:#999999
```