It is intended as an illustration of the various concepts of katame-waza (固技, grappling techniques) that exist in judo, and is used both as a training method and as a demonstration of understanding.
The katame-no-kata was developed by Jigoro Kano as a method of illustrating principles of grappling to allow students to more effectively apply them in randori.
Initially, the kata consisted of ten techniques.
These were subsequently appended, bringing the number to fifteen.
Your goal is to acquire the methods of controlling your opponent in your practice of Katame No Kata.