This week we continue our special five episode series on The Information 50, our annual list of the most promising startups valued at less than $1 billion. 

In episode two, executive editor Amir Efrati first talks to reporter Malique Morris about the explosive growth of Commerce, a new category added to the list this year. Next, Amir talks to Rachel Tipograph, founder and CEO of MikMak, the #1 ranked company in the Commerce category.