Aiven for Apache Cassandra® concepts
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    .. grid-item-card:: :doc:`Cross-cluster replication </docs/products/cassandra/concepts/cross-cluster-replication>`
        :shadow: md
        :margin: 2 2 0 0

    .. grid-item-card:: :doc:`Tombstones in Apache Cassandra </docs/products/cassandra/concepts/tombstones>`
        :shadow: md
        :margin: 2 2 0 0