The last test is from 2019 which is still accurate but the world is changing and we have arrived at .NET 7.0 which is reason enough to spin up my test suite again and measure from .NET 4.8, 3.1, 5.0, 6.0 up to 7.0. The “old” articles are still relevant despite their age. https://aloiskraus.wordpress.com/2019/09/29/net-serialization-benchmark-2019-roundup/ https://aloiskraus.wordpress.com/2018/05/0