The reason is because we use a layer (our main innovation) called DataSubstrate to build modular databases that support distributed transactions [1]. Because we use some MariaDB code (GPLv2) and some MongoDB code (AGPLv3) in our other projects [2] [3], so we license our DataSubstrate code to be compatible with both, and therefore, we also license EloqKV under both licenses.
[1] https://www.eloqdata.com/blog/2025/07/14/technology
[2] https://github.com/eloqdata/eloqsql
[3] https://github.com/eloqdata/eloqdoc