What is the main factor to increase sales and revenues and reduce expenses?

Marketing is the main factor to increase sales of (products and services) to achieve the objectives of a small and large companies and e-marketing and advertising on the Internet is the future and the only solution to the owners of products and services to market their products and services to increase sales. Where the percentage of those who use the Internet became more than the number of TV viewers, and therefore the e marketing is now becoming the best means of advertising to market products and services to all countries in the world and opportunities to many companies to export their products to many countries.
Millions of people looking for their needs using the internet. So the Internet saves time and effort in searching in the shops and malls. All products and services in any country can be got as they are in their places. Will you wait too much or will you have a seat on the Internet to display your products?
E-Marketing and advertising on the Internet are the most methods to achieve increased sales and lower-cost comparing with other advertising and marketing methods (such as TV stations, newspapers and magazines, billboards scattered, radio stations).