<p><span>Photo by <a href="https://unsplash.com/@jukkaaalho?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Jukka Aalho</a> on <a href="https://unsplash.com/s/photos/podcast?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a></span></p>今年度の米国でのポッドキャストのプログラマティック広告費、昨年度比2倍増との予想