The terms SEO, SEA, and SEM are often used interchangeably. The following overview attempts to differentiate these marketing terms.
SEM
- Search engine marketing (SEA) is a combination of SEA and SEO.
SEA
- This means search engine advertising and includes booking advertisements in text or image form.
- A measure to generate traffic or branding
- Many options for targeting or retargeting
- Marked as advertising (Ad)
SEO
- Search engine optimization (SEO) refers to measures taken to optimize websites for search engines, both on-page and off-page.
- SEO is usually a long-term strategy.
- It requires technical know-how and good writing skills.
- Thorough research beforehand is key.
- Rather "invisible" to the user
- Good SEO is dynamic and not a one-off.