Index curation is deprecated. For Elastic Stack version 6.7 and later, any deployments using index curation will be prompted to migrate to ILM.
The index lifecycle management (ILM) feature of the Elastic Stack provides an integrated and streamlined way to manage time-based data, making it easier to follow best practices for managing your indices. Compared to index curation, migrating to ILM gives you more fine-grained control over the lifecycle of each index.
For existing hot-warm deployments that are currently using index curation, there are a couple of options for migrating to index lifecycle management (ILM). You can: