SEM stands for Search Engine Marketing or Search Marketing and SEO for Search Engine Optimisation. Both terms are frequently used by marketers and are often used interchangeably, although they are not synonymous.
SEO stands for "Search Engine Optimisation" and refers to the methods that companies use to improve the ranking of their website in organic search engine results.
SEM is a collective term for SEO and other effective tactics to increase search engine traffic. In addition to SEO, SEM also includes paid approaches to reach the target group. Let's go into more detail...
SEO (search engine optimisation)
Search engine optimisation (SEO) is the process of using predefined procedures to increase the quality and quantity of organic traffic from search engines to your website.
SEO helps your website to rank higher than other websites if it is done correctly. The most important difference between SEM and SEO is that companies cannot buy a higher ranking in the organic search engines.
Search engine rankings are ultimately determined by algorithms; if you follow the steps correctly, your website will rank higher. Neglecting search engine optimisation, on the other hand, can lead to low rankings or removal from search engine indices. For this reason, many people seek professional help to win the SEO war.
Important considerations for search engine crawlers when providing content to users:
- Descriptive titles and URLs that contain relevant keywords
- Blogs and articles with new, relevant and entertaining content
- Mobile-friendly websites
- Inbound links from other websites that indicate the authority and reliability of your website
The difficulty with search engine optimisation is that the recommended tactics for ranking higher can change with every change to Google's website ranking algorithm. Maintaining the current guidelines requires considerable effort.
SEM is an acronym for "search engine marketing" (search engine marketing or search marketing)
SEM is a broad term that refers to all strategies that can help you improve your website's search engine rankings. This also includes paid advertising measures that allow companies to buy adverts that only appear in certain situations.
With paid advertising measures, you can buy targeted advertising space in the search engine results.
SEM differs from SEO in that, unlike SEO, it offers a paid advertising option that ensures the visibility of your website in search results.
There are various models for buying search engine advertising. PPC, or Pay Per Click, is one of them. You can buy adverts and pay depending on how many people click on them.
Prices are set using a "bidding system" where you must bid the highest price you are willing to pay for your advert.
Conclusion:
With SEM you get better rankings, visibility and more visitors, but you have to pay for it if you opt for paid advertising. SEO is completely free, but quite time-consuming. To get the best results, you need to carry out extensive studies.
Deutsch 
English (UK)