For improving your marketing operations, the marketing strategy must be reviewed/amended from time to time. Do you agree?

Marketing operates based on consumer's needs and wants apart from economic factors.
Therefore, as consumer behavior and demography keeps changing, the trends changes as well.
So it is with marketing strategies.
Innovation must be constant.

agree

Sales strategy would have to change depending upon the market conditions.35 years ago radio was the major  sales media to reach customers in most of Asia and Africa. In the80s the TV has overtaken the radio. Now with the  entry of the internet online ads and blogs are taking over. If an ad for sports goods used to portray a film star30 years ago , the ad may not be that popular with young people now as his fan club is now middle aged.