Leads for vacancies: 1500+ applications in 3 months

In 3 months, more than 1500 applications for vacancies were attracted through targeted advertising.
The average cost per lead is $2.3, the total advertising budget is about $9,000.
Dozens of combinations (audience + creative) have been set up and tested, the cost per result has been optimized.
The campaigns provided a steady flow of applications at a favorable cost.