Answer:
Affiliate marketing
Step-by-step explanation:
Affiliate marketing is a performance-oriented advertising strategy in which a company pays a commission to the external website (also known as affiliate partner) which shows products and service of the company and sales is generated from this external website. Commission is based on number of sales made. This type of marketing strategy helps in reducing advertising cost as cost is incurred for only sales made.
Example: When any one wants to buys a product from amazon but it visits any other sites(affiliate partner) which promotes that product on its site. Then product bought using link from that site is example of affiliate marketing.
As mentioned in problem Venus(it is here affiliate partner for website that sells travel package) is publishing travel package detail of of other site and when that package is bought using link provided from venus site, venus received 20% of sales thus exhibiting affiliate marketing strategy.