<p>For a freelancer providing services in advertising, key performance indicators (KPIs) play an important role in understanding the success of their work and increasing the effectiveness of campaigns. Properly selected and tracked KPIs allow to evaluate the results of work, identify strengths and weaknesses, as well as determine areas for improvement.<p>One of the main KPIs for a freelancer in the advertising field is conversion. Conversion reflects the percentage of visitors who have completed the desired action (for example, made a purchase or filled out a feedback form) after seeing an advertisement. A high conversion rate indicates that the advertising campaign effectively attracts the target audience and instills trust in them.</p><p>Another important KPI for a freelancer may be ROI (Return on Investment) - the ratio between the income received from the advertising campaign and the expenses incurred. ROI helps to determine how successfully the use of resources leads to profit. A high ROI indicates that the campaign is effective and profitable.</p><p>Another important indicator may be CTR (Click-Through Rate) - the percentage of users who clicked on an advertising link or banner relative to the total number of views. A high CTR indicates that the advertising is capturing the audience's attention and generating interest.</p><p>For a freelancer providing services in advertising, it is also important to track the metrics of advertising channels, such as CPA (Cost Per Acquisition), which reflects the cost of acquiring a new customer through a specific advertising channel. Analyzing CPA helps to identify the most effective and profitable channels for attracting new customers.</p><p>Therefore, for a freelancer working in advertising, key performance indicators (KPIs) play an important role in evaluating campaign success and improving their effectiveness. Tracking conversion, ROI, CTR, CPA, and other metrics helps to assess the effectiveness of advertising campaigns, identify weaknesses, and optimize the advertising strategy to achieve better results.</p></p>