• Changes to discrepancy model
• Changes to default browser
• Changes to ads
• Changes to attribution model
• Changes in competition or seasonality

The Correct Answer is: Changes to ads AND Changes to attribution model AND Changes in competition or seasonality

Explanation: Apart from conversion delay, three additional significant factors influence conversion volume: changes to the attribution model, shifts in competition or seasonality, and adjustments to ads. Any fluctuations in clicks due to seasonal trends or competitive shifts can directly affect the traffic and consequently the conversion volume on your website. Changes to ads, including keyword adjustments, targeting changes, creative variations, or Max CPC alterations, can influence the audience’s likelihood to convert. Additionally, adjustments to the attribution model can result in conversion credits being attributed further back, thus affecting perceived recent conversion volume.