[Feature Request] Cross-cluster search intercompability with Elasticseach clusters

[Outrun207]

Is your feature request related to a problem? Please describe

I am unable to search across elasticsearch clusters from OpenSearch.

Describe the solution you'd like

I'd like to be able to use OpenSearch as my main SIEM, but integrate disparate ElasticSearch clusters into my searches from OpenSearch. This would allow me to use OpenSearch as my primary SIEM, but still make use of ES deployments that are either Legacy or required for other reasons.

Related component

Search:Remote Search

Describe alternatives you've considered

Running two concurrent disparate SIEM solutions and dashboards.

Additional context

No response

[sandeshkr419]

[Search Triage] This might require a collaborative effort from developers for both Elasticsearch & OpenSearch as their might be licensing issues for OpenSearch to do that alone. Lets see what is the community interest on this.

Related issue on elastic: elastic/elasticsearch#119965