Board deck
A board deck is the document a company's leadership sends to its board of directors ahead of a board meeting. It reports performance against plan, explains what changed, and sets up the decisions the board needs to make.
A board deck is a recurring artifact, not a one-off: most companies ship one every quarter. It typically runs 15 to 25 core slides with an appendix, and it has to work twice - as a pre-read sent days in advance, and as the spine of the live discussion.