A redirect is a useful way to forward one URL to another. More simply put, it’s a way to send users (and search engines) to a different page than the one they originally landed on. This can be helpful if you want to take users from an old website to a new one, or from a broken page to a working one. There are different types of redirects (301s, 302s, and 307s), but in the world of SEO, 301 redirects are recommended. 301 refers to the HTTP status code, and these types of redirects are permanent and maintain ranking power throughout the redirecting process.
Remarketing is a type of advertising that delivers ads to audiences that are already familiar with your brand or service. This can mean delivering advertisements to users that have previously visited your website or used your mobile app before. Remarketing is an effective method for improving ROI, and can be done through Google AdWords.
A return on investment (ROI) measures net profit compared to the cost of an investment, therefore gauging its efficiency, profitability, and overall worth. The return on investment formula = (Net Profit / Cost of Investment) X 100.