The idea of low-code/no-code (LC/NC) application development is for end users to create their own custom applications, perhaps using a graphical design tool, selecting from a library of existing building blocks, or perhaps even with the assistance of artificial intelligence. Alexei Balaganski explains the concepts behind this new development, takes a look at the current market and, finally, highlights the challenges and security issues that may be hidden behind the use of such application development.