EC2

ECS

77 Services
3 Okapi tasks
All services have 2 tasks except for: mod-data-import, mod-data-export, mod-quick-marc, mod-data-export-spring,
Run ECS Comparison Tool to check memory and CPU allocations differences against past release's deployment.
All services do NOT have R/W split enabled
UI built on all 3 tenants (or at least fs09000000)

2 Database nodes, one read and one write node
EC2 instance type: db.r6g.xlarge
Performance Insight is enabled on both database nodes
Compare database schema against the schema of a DB cluster that was created from scratch to identify if there were any database objects missing. If there are any differences, make them to be like the other environment's schema.
Run Vacuum and ANALYZE table on inventory-storage.instance | item | holdings-record tables

ECS cluster points to ptf-kafka-3
The Data Import topics all have 2 partitions each
The inventory and search topics all have 2 or 4 partition
There are 4 DNS entries in Route 53, each points to a different Kafka cluster broker

ECS cluster points to fse-ptf OpenSearch cluster
Inventory records (instances, authority, holdings) are indexed on Elastic Search

Verify DB's CPU and memory utilization are typical (using RDS' monitoring graphs)
Verify modules' CPU and memory utilization are typical (using Cloudwatch Dashboard)
Go to Inventory app, select Items tab and look at the counts of the facets on the left to see if the counts are typical (in the millions for Available and other facets)
Perform a quick CICO test from the interface to see if there are no issues
Perform a quick DI test to make sure that everything is working
Run Karate smoke tests if possible.