Azure Synapse Analytics is compatible with Linux Foundation Delta Lake. Delta Lake is an open-source storage layer that brings ACID (atomicity, consistency, isolation, and durability) transactions to Apache Spark and big data workloads.
https://docs.microsoft.com/en-gb/azure/synapse-analytics/spark/apache-spark-what-is-delta-lake
Delta Lake is an open source project that enables building a Lakehouse architecture on top of data lakes. Delta Lake provides ACID transactions, scalable metadata handling, and unifies streaming and batch data processing on top of existing data lakes, such as S3, ADLS, GCS, and HDFS.