Intero Advisory trains professionals on how to use LinkedIn to build their personal and professional brand. Colleen McKenna founded the company in 2011.  

The Owings Mills firm works with entrepreneurs and larger companies throughout the mid-Atlantic and in a range of industries. It specializes in helping sales people incorporate LinkedIn as part of their marketing strategies. Its clients include Upper Chesapeake Health, PSA Financial, Select Medical and Target Marketing Group. Next year, the two-person firm expects to add new trainers and coaches to better serve the Baltimore region. 

Its strategic partners include content marketing strategist Tracey Gold, who conducts LinkedIn training sessions, and AbellTech. 

The company has an office in Greenville, South Carolina.