Marketing strategy depend uoim your product which you are trying to sell, since it depend upon the targeted audience to whom we have to target and what channel we have to adopt to market the product.
It is true that with the advancement of technology it is much easier to target customers with much precision and accuracy but in that also one has to decide which way to choose to market their product that can give high ROI in return.
So, from above we can draw some conclusion and that is to develop a marketing strategy one has to analyse and set its targeted audience and aacording to that should decide which way of marketing should be choosen.