Amazon OpenSearch

• Managed version of ElasticSearch (open source project)
• Needs to run on servers (not a serverless offering)
• Use cases:
  • Log analytics
  • Real-time application monitoring
  • Security analytics
  • Full text search
  • Clickstream analytics
  • Indexing

ELK Stack - ElasticSearch, Logstash, Kibana

• OpenSearch/ElasticSearch: provides search and indexing capability
• Kibana:
  • Provides real-time dashboards on top of the data that sits in ES
  • Alternative to CloudWatch dashboards (more advanced capabilities)
• Logstash:
  • Log ingestion mechanism, uses the Logstash Agent
  • Alternative to CloudWatch Logs
  • We can decide on log retention and granularity