Microsoft's Excel development team announced on Friday, December 4, 2020 that the beta version of LAMBDA, which allows you to define your own custom functions using Excel's formal language, has been ...

Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.

Five hidden Excel rules show helper columns, LET, and LAMBDA in action, cutting errors and making updates quick for any growing sheet.