Each paid ad will likely point to a product page, a specific landing page, or something that has the potential to drive financial results. As paid marketing would suggest by its name alone, you’re spending money on ads to drive specific actions. You need to determine ROAS beyond vanity metrics alone (like engagement or total leads). Say you drove five leads but spent $5,000 on your paid campaign. Your ROAS would be $1,000 per lead, which is a bit steep (depending on your industry). In this case, you’d want to adjust your strategy to avoid wasting money.
SEO may generate an adequate return on investment. However, search engines are not paid for organic search traffic, their algorithms change, and there are no guarantees of continued referrals. Due to this lack of guarantees and certainty, a business that relies heavily on search engine traffic can suffer major losses if the search engines stop sending visitors. Search engines can change their algorithms, impacting a website's placement, possibly resulting in a serious loss of traffic. According to Google's CEO, Eric Schmidt, in 2010, Google made over 500 algorithm changes – almost 1.5 per day. It is considered wise business practice for website operators to liberate themselves from dependence on search engine traffic. In addition to accessibility in terms of web crawlers (addressed above), user web accessibility has become increasingly important for SEO.
The most common form of organic SEM is search engine optimization (SEO). SEO refers to a variety of techniques designed to help your website rank higher in search engine results. Optimizing your website involves doing a little bit of research on what keywords or phrases your customers or potential customers are searching for when they are looking for your products or services online. It then involves writing web content using those keywords in a way that is both easy for search engines to pick up but still readable and pleasant for your website visitors.
Organic is different. Matching keywords to user intent means you may be present in many searches. The user may find you consistently, and once they get to your site, they are more likely to stay. Organic users are still your best long-term customers. In my experience, they have lower bounce rates and more pages visited, and they are more likely to return.