How do producer DJs play their own music live?

Hey guys! I'm a drummer and have been producing hip hop/trap and metal for a few years, and now I'm trying to expand my horizons with techno/trance too. I'm digging the outcome of my creations so far, but I'd like to know how to play my stuff live if the opportunity arises.

Can you explain what the workflow is for a DJ who produces their own stuff? How does it work live? Do they split arrangements into melody/beat and then try different stuff live? Do they only play with transitions?

Thank you!