This is the major source in Internet marketing with a simple concept. But this is not soo simple, it seems to be simple but not easy. So SEO refers to Search Engine Optimization. So what is Optimization? Generally Optimization is defined as the process of used design or form a possible way. This procedure is used for growth in business to make it profitableInternet marketing is one of the most popular way of promoting your business and this is one of the cheapest way of publicity. You may having the doubt 'why can't we telecast in televisions or why don't we give an advertisements in Radio's or display in the form of Hordings, Banners on the road'. Why not we can do that only if you are ready to invest min 10 to 50 lakhs or may be in crores, So that might be a problem for small scale business enterprenuers. For newly born business and 'currently established business' this best option and for 'well established business' this would be huge promotion in market expansion. Our sincere advice to the upcoming Enterprenuers is to invest their money in Internet-Marketing for promotion is better than other ways of marketing. The charges are so reasonable that anyone can afford it, let me tell you an example suppose you invest money nearly 10,000 per month in Internet marketing i.e 10,000*12 months you will be charged 1,20,000. In other hand if you give the advertisements in television you will be charged atleast 5 to 10 lakhs. So it is depended on you.