Make your application process nimble and mobile-friendly. Make it as easy as possible to apply as possible, with as few steps as possible. Speed defines success in the race to attract quality talent and prevent drop-off.
Treat your digital application process like an online shopping experience. Determine at what point the applicants are bailing out, leaving the equivalent of an "abandoned shopping cart" behind, and determine ways to keep them involved in the process.
Use automated screening to get rid of unqualified people and filter out those who aren't a fit right away.
Make sure the interview process doesn't slow down the hiring process.