Adda Birnir

Adda Birnir is the founder and CEO of Skillcrush. She was named one of 20 Women to Watch in technology by the Columbia Journalism Review, has been featured by Fast Company and the BBC, and serves as a member of the New York City Workforce Development Board. Adda is a graduate of Yale and lives in Queens with her husband and two sons.

Tech 101: Client-Side vs. Server-side

Client-side means that the action takes place on the user’s (the client’s) computer. Server-side means that the action takes place on a web server.

Tech 101: Password Hashing

Password hashing is a way a web site can store your password to keep it safe.

Tech 101: QA (Quality Assurance)

QA stands for Quality Assurance, and it's the process a site or product goes through to make sure everything's working right.