Investigate an ELK stack for CloudTrail and other logging services

[jakemulley]

We should investigate configuring an ELK stack for the Modernisation Platform to allow us to visualise and centralise logging dashboards that are key to the performance and management of the Modernisation Platform.

[dms1981]

https://aws.amazon.com/opensearch-service/the-elk-stack/what-is-opensearch/ <- is OpenSearch a suitable managed alternative if we don't want to shoulder the burden of maintaining our own ELK stack?

[SimonPPledger]

we are looking at an observability platform. so this is not required