1. Shorthand for End Of Discussion, EOD is commonly used in chat rooms and text communications. Below is an example of how this could be used in chat.
Ok enough, EOD!
2. EOD can also mean End of Day, EOD refers to scripts, programs, or other tasks that are performed at the end of a business day. Variations of this term include End Of The Day (EOTD) and At The End Of The Day (ATEOTD).