SEM (search engine marketing) is broken down into two groups:
SEO = search engine optimization are the techniques to optimize your website to rank high in the search results. it is broken down into on-page seo (meta tags, h1 tags, etc) and off-page seo (building backlinks to increase page rank)
PPC = pay per click advertising where you pay (usually a search engine) per click on keywords that you bid on to appear as sponsored listings in search results and on other publisher websites

Thanks you. I needed clarification

Both are parts of Internet Marketing. In later( SEO) one one have to pay google and in former(PPC) one you shouldn't.............




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Another difference is that SEO can take a long time as you build content and links while PPC allows you to start buying traffic today.

PPC is getting harder to do as more people are advertising online. The prices are going up and the standards to advertise on search engines are increasing.

It's like the story of the tortoise (SEO) and the hare (PPC). Whilst PPC can get you way ahead of your competition in a matter of days, ultimately it is a SEO strategy that will help you to ultimately win the race.

Seo and PPC are both two different forms of Internet Marketing. PPC is pay per click on Google Adwords or another advertising format with ads. Search Engine Optimization is the optimization of your website to rank higher than your competition in the organic search results, the natural search results. 85% of search engine users click on the SEO sites, or the natural organic search results, not the ads. 15% of search engine users click on the PPC ads, the pay per click ads of google, yahoo, or another search engine. So although SEO is much more time consuming and takes a lot of hard work, it is better to be found there, and it is free. The PPC, you must pay for, and less people click on the ppc ads. However, the ppc ads allow you to start at the top of the search engines immediately, whereas the seo portion might take some time. This is my breakdown in a nutshell. thanks.

Both of these methods are important so you should pay enough attention to them, but if you are low on budget its better to start of with SEO methods afterward you can go to PPC..

PPC means pay per click and seo means Search engine optimization
and PPC is a part of Seo

So glad I found this, needed clarifying on this subject too.