The document recaps discussions from day 3 of the 2015 Mobile World Congress. It covers 5 topics: 1) how carriers are building upon their data pipelines by partnering with startups and brands, 2) how social networks are building data archives about user thoughts and behaviors, 3) the need to understand both online and physical consumer context and behaviors, 4) the importance of defining desired outcomes when implementing IoT solutions for businesses, and 5) key considerations for building scalable and cost-effective IoT platforms for businesses.