What method(s) of optimization does the Amazon DSP offer?

The Amazon DSP offers both manual and automatic optimization methods to help advertisers achieve their campaign goals. Manual optimizations involve direct adjustments by the advertiser, such as changing bids, targeting parameters, or creative assets based on performance insights. This allows for granular control and strategic decision-making. Automatic optimizations, on the other hand, leverage machine learning algorithms to continuously adjust campaign settings in real-time, aiming to improve performance against defined objectives without constant human intervention. This can include automated bidding strategies or dynamic allocation of impressions. Therefore, both methods are available to cater to different levels of control and automation preferences. "Neither of these" is incorrect because both options are indeed offered.