We primarily use Cost Explorer to dig deep into cost usage.
What are some of the primary factors of Cloud Waste that you have noticed and can you share top 3 recommendations to reduce Cloud Waste?
Cost Explorer is nice. If you want more granular data (resource level, hourly) then you need to look at your Cost and Usage Report which you can do with Cloudthread or AWS CUDOS dashboards.
Biggest way to save quick with zero engineering effort is through committed use discounts (Savings Plans / Reserved Instances) if an org hasn't done this yet.
Top 3 source of savings for customers from Cloudthread computed opportunities has been RDS/ElastiCache/DynamoDB rightsizing, EBS volumes in standard storage that can be archived, and s3 intelligent tiering implementation.
Typically it's worth doing a round of usage optimization (e.g. rightsizing) so you're not buying committed use discounts on unnecessary/wasted instances :)