diff --git a/internal/distro/rhel9/images.go b/internal/distro/rhel9/images.go
index 92ef6c854..9d8486273 100644
--- a/internal/distro/rhel9/images.go
+++ b/internal/distro/rhel9/images.go
@@ -8,6 +8,7 @@ import (
 	"github.com/osbuild/osbuild-composer/internal/container"
 	"github.com/osbuild/osbuild-composer/internal/distro"
 	"github.com/osbuild/osbuild-composer/internal/fdo"
+	"github.com/osbuild/osbuild-composer/internal/ignition"
 	"github.com/osbuild/osbuild-composer/internal/image"
 	"github.com/osbuild/osbuild-composer/internal/manifest"
 	"github.com/osbuild/osbuild-composer/internal/osbuild"
@@ -411,6 +412,9 @@ func edgeSimplifiedInstallerImage(workload workload.Workload,
 	if bpFDO := customizations.GetFDO(); bpFDO != nil {
 		img.FDO = fdo.FromBP(*bpFDO)
 	}
+	if bpIgnition := customizations.GetIgnition(); bpIgnition != nil && customizations.Ignition.FirstBoot != nil {
+		img.Ignition = ignition.FromBP(*bpIgnition.FirstBoot)
+	}
 
 	d := t.arch.distro
 	img.ISOLabelTempl = d.isolabelTmpl
diff --git a/internal/distro/rhel9/imagetype.go b/internal/distro/rhel9/imagetype.go
index ade9ae1a3..3db9e769a 100644
--- a/internal/distro/rhel9/imagetype.go
+++ b/internal/distro/rhel9/imagetype.go
@@ -332,7 +332,7 @@ func (t *imageType) checkOptions(customizations *blueprint.Customizations, optio
 		}
 
 		if t.name == "edge-simplified-installer" {
-			allowed := []string{"InstallationDevice", "FDO"}
+			allowed := []string{"InstallationDevice", "FDO", "Ignition"}
 			if err := customizations.CheckAllowed(allowed...); err != nil {
 				return fmt.Errorf("unsupported blueprint customizations found for boot ISO image type %q: (allowed: %s)", t.name, strings.Join(allowed, ", "))
 			}
@@ -359,6 +359,22 @@ func (t *imageType) checkOptions(customizations *blueprint.Customizations, optio
 					return fmt.Errorf("boot ISO image type %q requires specifying one of [FDO.DiunPubKeyHash,FDO.DiunPubKeyInsecure,FDO.DiunPubKeyRootCerts] configuration to install to when using FDO", t.name)
 				}
 			}
+
+			// ignition is optional, we might be using FDO
+			if customizations.Ignition.HasIgnition() {
+				if customizations.GetIgnition().Embedded != nil && customizations.GetIgnition().FirstBoot != nil {
+					return fmt.Errorf("both ignition embedded and firstboot configurations found")
+				}
+				if customizations.GetIgnition().Embedded != nil {
+					possibleErr := customizations.GetIgnition().Embedded.CheckEmbeddedIgnition()
+					if possibleErr != nil {
+						return possibleErr
+					}
+				}
+				if customizations.GetIgnition().FirstBoot != nil && customizations.GetIgnition().FirstBoot.ProvisioningURL == "" {
+					return fmt.Errorf("ignition.firstboot requires a provisioning url")
+				}
+			}
 		} else if t.name == "edge-installer" {
 			allowed := []string{"User", "Group"}
 			if err := customizations.CheckAllowed(allowed...); err != nil {
diff --git a/internal/ignition/ignition.go b/internal/ignition/ignition.go
new file mode 100644
index 000000000..da0b9e7f1
--- /dev/null
+++ b/internal/ignition/ignition.go
@@ -0,0 +1,12 @@
+package ignition
+
+import "github.com/osbuild/osbuild-composer/internal/blueprint"
+
+type Options struct {
+	ProvisioningURL string
+}
+
+func FromBP(bpIgnitionFirstboot blueprint.FirstBootIgnitionCustomization) *Options {
+	ignition := Options(bpIgnitionFirstboot)
+	return &ignition
+}
diff --git a/internal/image/ostree_simplified_installer.go b/internal/image/ostree_simplified_installer.go
index d78e959c0..a7bd3e1d0 100644
--- a/internal/image/ostree_simplified_installer.go
+++ b/internal/image/ostree_simplified_installer.go
@@ -9,6 +9,7 @@ import (
 	"github.com/osbuild/osbuild-composer/internal/disk"
 	"github.com/osbuild/osbuild-composer/internal/environment"
 	"github.com/osbuild/osbuild-composer/internal/fdo"
+	"github.com/osbuild/osbuild-composer/internal/ignition"
 	"github.com/osbuild/osbuild-composer/internal/manifest"
 	"github.com/osbuild/osbuild-composer/internal/platform"
 	"github.com/osbuild/osbuild-composer/internal/rpmmd"
@@ -50,6 +51,9 @@ type OSTreeSimplifiedInstaller struct {
 
 	FDO *fdo.Options
 
+	// ignition firstboot configuration options
+	Ignition *ignition.Options
+
 	AdditionalDracutModules []string
 }
 
@@ -118,6 +122,12 @@ func (img *OSTreeSimplifiedInstaller) InstantiateManifest(m *manifest.Manifest,
 			kernelOpts = append(kernelOpts, "fdo.diun_pub_key_root_certs=/fdo_diun_pub_key_root_certs.pem")
 		}
 	}
+
+	// ignition firstboot options
+	if img.Ignition != nil {
+		kernelOpts = append(kernelOpts, "coreos.inst.append ignition.config.url="+img.Ignition.ProvisioningURL)
+	}
+
 	bootTreePipeline.KernelOpts = kernelOpts
 
 	rootfsPartitionTable := &disk.PartitionTable{