TileDB Embedded is an open-source (MIT license) C++ library that stores and accesses multi-dimensional arrays (both dense and sparse) and allows for very fast slicing across dimensions. The TileDB Embedded library is wrapped by various programming language APIs (e.g., Python, R, Java, C, C++, Go, SQL) and integrations (e.g., Spark, Dask, MariaDB, PrestoDB, GDAL, PDAL, QGIS, Hail). This library also handles data compression, parallel execution and file I/O, and interfaces with a variety of storage backends such as parallel file systems (e.g., Lustre, HDFS) or cloud stores (e.g., AWS S3, Azure, GoogleCloud, MinIO).