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+## Introduction
+
+The `meta-agl` layer provides the minimal set of software
+to boot an AGL Distribution system.
+You use this layer as the minimal core on which to build AGL profiles.
+
+**NOTE:** The `meta-agl` layer does not include a reference UI.
+  The reference UI is included as part of the
+  [`meta-agl-demo`](./meta-agl-demo.html) layer.
+
+## Sub-Layers
+
+The `meta-agl` layer itself contains many sub-layers and files.
+Following is a "tree" look at the layer:
+
+```
+|-- LICENSE
+|-- LICENSE.GPL-2.0-only
+|-- LICENSE.MIT
+|-- README-AGL.md
+|-- README.md -> meta-agl.md
+|-- agl-layers-overview.md
+|-- docs
+|-- meta-agl-bsp
+|-- meta-agl-core
+|-- meta-agl-core-test
+|-- meta-agl-ic
+|-- meta-agl-ivi
+|-- meta-agl.md
+|-- meta-netboot
+|-- meta-pipewire
+|-- scripts
+`-- templates
+```
+
+This list provides some overview information on the files and sub-layers
+in `meta-agl`:
+
+* LICENSE* : licenses of the various components. 
+* README* : RTFM
+* agl-layers-overview.md: references to the various layers that make up AGL
+* `docs`: Contains files that support AGL documentation.
+* `meta-agl-bsp`: Contains adaptations for recipes and required packages
+  to boot an AGL distribution on targeted hardware and emulation (i.e. QEMU).
+* `meta-agl-core`: This is the core layer with essential recipes and the distro.
+* `meta-agl-core-test`: recipes supporting qa images (separate layer due to external dependencies)
+* `meta-agl-ic`: Instrument Cluster platform
+* `meta-agl-ivi`: IVI platform
+* `meta-netboot`: Contains recipes and configuration adjustments to allow network
+  boot through network block device (NBD) since network file system (NFS) does not
+  support security labels.
+* `meta-pipewire`: Configuration and recipes supporting pipewire as audio manager
+* `scripts`: AGL development setup and support scripts.
+* `templates`: Base, feature, and machine templates used in the AGL development
+  environment.
+
+## Packagegroups
+
+This section describes the AGL
+[packagegroup](https://yoctoproject.org/docs/2.4.4/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
+design:
+
+### core non-ui packagegroups:
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-connectivity.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-devel.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-security.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-os-commonlibs.bb
+
+### graphical subsystem
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-profile-graphical.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-graphical-multimedia.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-graphical-weston.bb
+
+### image-related packagegroups
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-boot.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-image-boot.bb
+meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-image-minimal.bb
+
+### QA/Test related packagegroups
+meta-agl-core-test/recipes-test/packagegroups
+meta-agl-core-test/recipes-test/packagegroups/packagegroup-agl-test.bb
+
+## Images
+
+### (Barely) bootable image
+meta-agl-core/recipes-platform/images/agl-image-boot.bb
+
+### minimal image and SDK (console)
+meta-agl-core/recipes-platform/images/agl-image-minimal.bb
+meta-agl-core/recipes-platform/images/agl-image-minimal-crosssdk.bb
+
+### weston-based image for re-use
+meta-agl-core/recipes-platform/images/agl-image-weston.bb
+
+### image for use in the YP autobuilder
+meta-agl-core/recipes-platform/images/agl-image-core-autobuilder.bb
+
+### image with extra QA tooling (e.g. to run LTP)
+meta-agl-core-test/images/agl-image-minimal-qa.bb