[ { "type": "api-change", "category": "EC2", "description": "This release adds support for specifying a maximum hourly price for all On-Demand and Spot instances in both Spot Fleet and EC2 Fleet." }, { "type": "api-change", "category": "Organizations", "description": "Specifying the tag key and tag value is required for tagging requests." }, { "type": "api-change", "category": "RDS", "description": "This release adds support for RDS DB Cluster major version upgrade " }, { "type": "api-change", "category": "DocDB", "description": "This release provides support for cluster delete protection and the ability to stop and start clusters." } ]