[
    {
        "type": "api-change",
        "category": "EC2",
        "description": "You can now configure your EC2 Fleet to preferentially use EC2 Capacity Reservations for launching On-Demand instances, enabling you to fully utilize the available (and unused) Capacity Reservations before launching On-Demand instances on net new capacity."
    },
    {
        "type": "api-change",
        "category": "ComprehendMedical",
        "description": "New Ontology linking APIs will provides medication concepts normalization and Diagnoses codes from input text. In this release we will provide two APIs - RxNorm and ICD10-CM. "
    },
    {
        "type": "api-change",
        "category": "MQ",
        "description": "Amazon MQ now supports throughput-optimized message brokers, backed by Amazon EBS."
    }
]