Which is better, SEO or SEM?

Hi Friends,
Conversely, SEO is something that you acquire over time and typically over a long time. 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.

SEO is a type of search engine marketing (SEM) that helps to optimize your website pages to rank higher in search engines.