ASDF is a language-neutral file format for serializing scientific data,
in use by JWST, DKIST and Roman. It is integrated in data analysis and
visualization tools. It has human-readable hierarchical metadata structure,
followed by binary blocks and is designed to be easily extensible and
customizable. The tutorial will be a hands-on session focusing on reading,
writing and creating ASDF files in Python. It aims to show the advantages
of ASDF over other formats by working through an example challenging
in other formats (WCS). Participants will gain understanding of how ASDF
works at the format and library level.