•  Return on investment (ROI):

ROI is a common metric that measures the amount you spent in your marketing to the amount you received in return.

• Website traffic: 

Regularly tracking the traffic to your website will help you determine what promotions are effective and when. 

• Impressions:

impressions is the total number of views your content and ads get. It measures every time someone views your ad

•  Click-through rates (CTR): measure the number of times an ad is clicked with the total number of impressions the ad received. To understand the value of your ads to the viewers use this statistic.

• cost per click:

how much you spend each time a customer clicks on your ad. it is more beneficial if your cost per click is fewer.

• Social engagement

Social engagement is the number of people who interact with an element of your marketing campaign, includes the 

interaction:(Clicks-Shares-Likes-Comments)

• Bounce Rate: The number of people that close your website after viewing the landing page. This can helps you to know:
• Disinterest
• Inappropriate content
• long loading delays or loading faults.