The main difference between SEO and SEM is that SEO is focused on optimizing a website in order to get traffic from organic search results. On the other hand, SEM is focused to get traffic and visibility from both organic and paid search. SEO is where you focus 100% on ranking in the organic results. SEM is when you tap into both SEO and PPC in order to get traffic from search engines.
Google’s search results are divided into two main categories: the paid search results and the organic search results. SEO is free way to rank your website on the google search engine and google will not charge from you. But SEM is totally paid process to rank your website.
SEM results show to a select target audience. SEO results do not. While successful SEO and SEM strategies are driven by a plan to connect with a select audience, you can only specify that target audience through SEM. Through SEM, you can select what audiences you want to see the search results by assigning filters based on age, location, income, habits, and more. Through SEO, you cannot specifically choose who will see your search results.
The result of SEM is immediately. Through paid SEM ads, you can start to put your results in front of audiences with just a few clicks. In SEM you just pay google and google will run your ad. But SEO takes time for ranking, because SEO provide organic traffic with non-paid service so need to effort for ranking. It can take months of implementing an SEO strategy before a brand begins to rank on search engines.
SEM is better for testing than SEO. Because you can immediately turn SEM paid ads off and on, it’s a great strategy for testing. You can quickly revise your ad copy, target new audiences, and change landing page content to test your new tactics. This flexibility allows you to see differences in your strategies immediately. You cannot accomplish this through SEO, as it would take too much time to make changes and monitor differences in results.
SEO takes time for rank your website and provide you quality results. But SEM is only work when you pay to google if you stop paying then google don’t show your ads and your SEM strategy is over.