As far as use case:
This is for a website where users add forms (just keyword/text fields, not docs) that get indexed (in near real time) and are stored indefinitely.
These forms are then searched by the members of their organization.
So there is a high search load, and near-real-time indexing.
Yup the Docs are a bit Behind / mixed up for that top level selection there have been a lot of updates the page you really want to look at is this pagehere which should be up to date.
I would probably look at the CPU Optimized (ARM)
is your searches are complex etc, aggregation and perhaps smaller dataset you can go with Compute Optimized which give a Higher Ratio to CPU to RAM which makes searches and indexing fast but the amount of storage is a bit lower but still pretty substantial
CPU Optimized (ARM)
aws.es.datahot.c6gd
Suitable for ingestion use cases with 1-4 days of data available for fast access and for search use cases with indexing and querying workloads. Provides the most CPU resources per unit of RAM.
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