What is the corner stone in the marketing process?

SEVEN P,S    ARE DEEPER LIKE SEVEN SEAS ,,  SO THINK OVER EACH ONE AND GET THE BENEFITS............   AGREED WITH HASEEB KHALID & ALAMGEER HUSSAIN HASHMI

The product quality of course

All ingredients of marketing will be cornerstone in itself as each provides an opportunity for creative ideas to have an edge over others for survival.

Marketing Strategy is around what the Process Revolves.

For me7 ps are cornerstone of marketing process. For a successful marketing strategy not only to look at each of them but also create a perfect mix for best possible outcome to meet market. 

Good Day!!!

Agreed to the valuable comments of all....... i will vote for the Marketing Strategy

product quality

if we look at marketing from a different point of view i see that the customer is the cornerstone of marketing.

without the customer we don't need marketing.

this my own view and it depends how we all look at it.

Very good question Mr. Sallam,

In my long career of marketing I have applied and came across almost all techniques of marketing and its concepts. 

But the main thing which I learnt is 

MARKETING IS only the affective & effective expression. No matter we opt for ATL BTL TTL,4ps or7ps, social or economic.

I am sure that all the experienced & members would accept this statement. 

For me, I think there is no corner stone in marketing. But there is bundle of marketing techniques that work together to achive the wanted goal.

Best regards,

MARKETING IS only the affective & effective expression. No matter we opt for ATL BTL TTL,4ps or7ps, social or economic.