What are the risks and benefits of using automated bidding strategies versus manual bidding strategies within Yahoo! Japan Ads?

Automated bidding strategies within Yahoo! Japan Ads offer benefits like efficiency and real-time optimization but also pose risks related to data dependency and lack of granular control, compared to manual bidding strategies. Automated bidding, such as 'Target CPA' or 'Maximize Conversions', uses machine learning to adjust bids automatically based on historical data and real-time market conditions, saving time and improving efficiency. It can quickly react to changing trends and optimize for specific goals (CPA, ROAS). However, automated bidding relies heavily on accurate and sufficient conversion data. If conversion data is sparse or unreliable, the algorithm may make suboptimal bidding decisions. It also offers less granular control. While you set the target CPA or ROAS, the algorithm determines the specific bids, limiting direct influence. Manual bidding, where advertisers manually set bids for each keyword, offers maximum control and transparency. It allows for strategic bidding based on specific knowledge of the market, keywords, and competitor activity. However, manual bidding is time-consuming and requires constant monitoring and adjustments. It's difficult to react to real-time changes as quickly as automated systems. Therefore, automated bidding strategies require sufficient historical data and give less control. Manual bidding strategies give more control but are resource intensive and cannot be as reactive. For new campaigns or those with limited conversion data, manual bidding is often preferable initially, then switch to automated.