In Darktable, styles will allow a saved set of edits. A style can be applied to multiple images in the Lighttable using the
Styles module. Individual Darkroom modules may have presets. Presets can be applied automatically to images based on combinations of camera, lens, ISO, and a few other similar parameters.
An easy way to create a style is to edit an image in the Darkroom to the appearance you want and then select the
styles icon from the
history stack module. Styles can also be created using the
Styles module on the Lighttable.
On the Lighttable it is also possible to copy and part or all of one image's history stack to other images using the
History Stack module. Sometimes this is easier than creating a style, sometimes it isn't.
It is also possible to export images using a particular sidecar (
xmp) file from the command line using the sytnax
$>darktable-cli <input> <xmp> <output>
using Darktable's command line interface.