We can record audio and video in a formal or informal manner.
Informal recordings of sessions are a great tool to see how you have progressed over time or to just capture a moment for future enjoyment.
A more formal recording can be used as an audition tape or promotion of your music. It could also be presented as a gift to someone special or as a token of appreciation to someone who always encouraged you in your musical pursuits.
Either way you can share with others via social media.