the article Know Your Customers' "Job$-$to$-$be$-$Done," Prof. Chistensen and colleagues assert that customers don't simply buy a product: they hire it to do a job. What is the Jobs$-$To$-$Be$-$Done $($JTBD$)$ Theory?

$1.$The JTBD theory asserts that customers' needs are constantly changing and it is aimeless to understand why.

$2.$The JTBD theory demonstrates that customer demographics, such as age and education degree, are the most relevant variables causing someone to buy a product.

$3.$The JTBD theory guides firms on how to identify the real, fundamental tasks that customers are trying to resolve or tackle in their lives.

$4.$The JTBD theory shows how companies develop offerings to customers based on assumed buying behaviors.

$5.$The JTBD theory suggests that a product's function and its job are essentially the same, which makes the firm to focus on selling existing products