Sysbuild was introduced in Zephyr's v3.2.0 release, and has been adopted in the nRF Connect SDK v2.4.0. Sysbuild will gradually become the new workflow for handling multi-image build configurations and it will replace the child image mechanism, specific to the nRF Connect SDK.
The VS Code extensions now support sysbuild when working with nRF Connect SDK v2.4.0 and newer. This affects different areas of the extension, as described in the following sections.