Search engine marketing is considered as a combination of two things, one Seo process and other is the paid advertisement campaign (pay-per-click).
Actually SEM is considered as a broader term because it will cover all the aspect like to bring more traffic to the website plus making website visible on the search engines. We at Digital Poin8 focusing on quality SEM and SEO services to our clients. There are a lot of advantages of doing SEM as compared to the seo process.
In SEM you can see the results in short time period as they process involve paid campaigns like pay per click. That will surely be helpful for bringing more traffic and audience to your website.
It all depends on the amount of money you want to spend. The more extensive the campaign will be the higher the result would be. In short SEM is more productive and helpful than SEO.
To achieve instant results use SEM methodology.