When is offering a DISCOUNT to your customers a "good" thing to do and when is it a "bad" thing to do?

Discount it's attractive tool offering to customers to satisfy them..allways it based on the behavior of the customers, pricing strategies of the firm and other factors.

Discount alaways effective if the firm compete based on price(red ocean

In blue ocean thE firms always compete based on quality.

offering discount is part of marketing campaign we can say it's good when we offer it in loyalty programs , in off season time and shopping festivals. and we can say its bad when we  want get rid of stock.