Shifting the focus to the time span, we may need to measure some "Interim Metrics", which give us some insight during the journey itself, as well as we need to measure some "Final Metrics" at the end of the journey to inform use if the overall initiative was successful or not. As an example, most of social media metrics and indicators such as likes, shares and engagement comments may be classified as interim metrics while the final increase/decrease in sales volume is clearly from the final category.

Affiliate marketing is an ideal solution for those looking to gain control of their own income by focusing on performance-based revenue options. Working in tandem with a seller, a motivated affiliate marketer will be able to achieve a passive income from the comfort of their home without worrying about producing their own product or service. Although the success of the job does depend on the affiliate’s marketing skills, it can prove to be an effective way to meet your income goals as either a primary career or a profitable second job.
The concept of affiliate marketing on the Internet was conceived of, put into practice and patented by William J. Tobin, the founder of PC Flowers & Gifts. Launched on the Prodigy Network in 1989, PC Flowers & Gifts remained on the service until 1996. By 1993, PC Flowers & Gifts generated sales in excess of $6 million per year on the Prodigy service. In 1998, PC Flowers and Gifts developed the business model of paying a commission on sales to the Prodigy Network.[8][9]