Core Insights - Trade Desk (TTD.US) may face the risk of losing Walmart (WMT.US) as a key client due to dissatisfaction with high fees and the renegotiation of their partnership [1][2] - Walmart has gained the option to use other advertising purchasing platforms, potentially benefiting competitors like Amazon (AMZN.US) [1] - Amazon has been increasing its efforts in online advertising sales and has lowered its fees to attract advertisers away from Trade Desk [1] Group 1 - Trade Desk was previously the exclusive technology provider for advertisers using Walmart's customer data for online advertising [1] - Walmart's dissatisfaction stems from Trade Desk charging double-digit rates for its services, while Amazon has reduced its fees to 1% from previous rates of 5% and 7% [1] - A Trade Desk employee indicated that Walmart is protective of its customer shopping data to prevent it from falling into Amazon's hands [2] Group 2 - Trade Desk has developed an independent version of its technology for Walmart, which operates on Microsoft's Azure platform, although much of its business still relies on Amazon Web Services (AWS) [2] - There are indications that Walmart may consider acquiring existing advertising purchasing platforms or developing its own from scratch [2]