onboard account

[shaharhada]

"Trulioo helped us onboard 100,000 accounts in just the first six months, all while providing a semless user experience."
from the link: https://id.trulioo.com/rs/392-YOD-077/images/CaseStudy_WeBull.pdf
that is in the place with color blue text in page 2 near the main text.
What is onboard account?

 

[USAFRet]

"onboarding" is bringing new accounts or people into the environment.

Where it came from:
"We're bringing new people onboard the ship."