This week's episode has been brought to you by the letters M and A. That's right, it's merger and acquisition week on The Big Story, with the exchange Magnite acquiring SpotX, as well as Sharethrough and District M merging. What do these combos have in common? How are they different? Listen in to find out. Also, we'll give our POV on the Wall Street frothiness around ad tech. Which seems to be highly cyclical.