As the operator of a website you can not avoid the topic of SEO (search engine optimization) a day. The only question is whether that alone mastered, what certainly some knowledge is necessary or whether one turns to an SEO company and all are there in order.
Whether one cares about SEO or does it stay depends, among other also on the nature of the site and its purpose. If only his family is on a web page - and some holiday presents online that are of interest only to a limited group of people, such as family and friends anyway, you can certainly do without measures for search engine optimization and even more to SEO companies and SEO specialists.
Even if a company only a corporate website as a sort of web business card like that will not serve the customer acquisition or the sale, not overly strong efforts are needed in the area of SEO. A few basic things you should heed, after one has read to the subject or just leave these basic things from an SEO expert do but to award large contracts to SEO Companies can be dispensed with in most cases.
But if the website customer acquisition, or sale are or would like to earn some other way of money, such as with affiliate marketing, you should already seriously deal with the issue SEO and either do himself what to do about it or if a to the knowledge or lack the necessary time accordingly submit to a SEO specialist or an SEO company. The natural will cost money.