> For the complete documentation index, see [llms.txt](https://vzvz.gitbook.io/koppeltaal-2.0-dev-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vzvz.gitbook.io/koppeltaal-2.0-dev-guide/hackathon-use-cases/crud-task/use-case-4-abonneren-op-changes.md).

# Use-case 4: Subscribing to changes

To receive notifications on important resources, applications can create their own `Subscription` resources. Follow [this](/koppeltaal-2.0-dev-guide/technische-howto/resources-managen/abonneren-op-changes.md) page and try subscribing to `Task` changes.