diff --git a/Makefile b/Makefile
index e564de9..1e19b27 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-PKGS := arch release stream fedoracoreos
+PKGS := arch release stream stream/rhcos release/relrhcos fedoracoreos
 
 build:
 	for pkg in $(PKGS); do (cd $$pkg && go build -mod=vendor); done
diff --git a/release/release.go b/release/release.go
index ec2f8a3..9c6bc8a 100644
--- a/release/release.go
+++ b/release/release.go
@@ -4,6 +4,10 @@
 // with streams instead.
 package release
 
+import (
+	"github.com/coreos/stream-metadata-go/release/relrhcos"
+)
+
 // Index models the release index:
 // https://github.com/coreos/fedora-coreos-tracker/tree/master/metadata/release-index
 type Index struct {
@@ -41,8 +45,9 @@ type Metadata struct {
 
 // Arch release details
 type Arch struct {
-	Commit string `json:"commit"`
-	Media  Media  `json:"media"`
+	Commit               string               `json:"commit"`
+	Media                Media                `json:"media"`
+	RHELCoreOSExtensions *relrhcos.Extensions `json:"rhel-coreos-extensions,omitempty"`
 }
 
 // Media contains release details for various platforms
diff --git a/release/relrhcos/rhcos.go b/release/relrhcos/rhcos.go
new file mode 100644
index 0000000..8e2d520
--- /dev/null
+++ b/release/relrhcos/rhcos.go
@@ -0,0 +1,14 @@
+package relrhcos
+
+// Extensions is data specific to Red Hat Enterprise Linux CoreOS
+type Extensions struct {
+	AzureImage *AzureImage `json:"azure-image,omitempty"`
+}
+
+// AzureImage represents an Azure cloud image.
+type AzureImage struct {
+	// URL to an image already stored in Azure infrastructure
+	// that can be copied into an image gallery.  Avoid creating VMs directly
+	// from this URL as that may lead to performance limitations.
+	URL string `json:"url,omitempty"`
+}
diff --git a/release/translate.go b/release/translate.go
index eaf6cd2..7e19b41 100644
--- a/release/translate.go
+++ b/release/translate.go
@@ -2,6 +2,7 @@ package release
 
 import (
 	"github.com/coreos/stream-metadata-go/stream"
+	"github.com/coreos/stream-metadata-go/stream/rhcos"
 )
 
 func mapArtifact(ra *Artifact) *stream.Artifact {
@@ -33,6 +34,11 @@ func mapFormats(m map[string]ImageFormat) map[string]stream.ImageFormat {
 func (releaseArch *Arch) toStreamArch(rel *Release) stream.Arch {
 	artifacts := make(map[string]stream.PlatformArtifacts)
 	cloudImages := stream.Images{}
+	var rhcosExt *rhcos.Extensions
+	relRHCOSExt := releaseArch.RHELCoreOSExtensions
+	if relRHCOSExt != nil {
+		rhcosExt = &rhcos.Extensions{}
+	}
 	if releaseArch.Media.Aws != nil {
 		artifacts["aws"] = stream.PlatformArtifacts{
 			Release: rel.Release,
@@ -57,12 +63,17 @@ func (releaseArch *Arch) toStreamArch(rel *Release) stream.Arch {
 			Formats: mapFormats(releaseArch.Media.Azure.Artifacts),
 		}
 
-		// Not enabled right now
-		// if az := releaseArch.Media.Azure.Images; az != nil && az.Global != nil && az.Global.Image != nil {
-		// 	azureImage := StreamCloudImage{}
-		// 	azureImage.Image = fmt.Sprintf("Fedora:CoreOS:%s:latest", rel.Stream)
-		// 	cloudImages.Azure = &azureImage
-		// }
+		if relRHCOSExt != nil {
+			az := relRHCOSExt.AzureImage
+			if az != nil {
+				rhcosExt.AzureImage = &rhcos.AzureImage{
+					Release: rel.Release,
+					URL:     az.URL,
+				}
+			}
+		}
+		// In the future this is where we'd also add FCOS Marketplace data.
+		// See https://github.com/coreos/stream-metadata-go/issues/13
 	}
 
 	if releaseArch.Media.Aliyun != nil {
@@ -169,8 +180,9 @@ func (releaseArch *Arch) toStreamArch(rel *Release) stream.Arch {
 	}
 
 	return stream.Arch{
-		Artifacts: artifacts,
-		Images:    cloudImages,
+		Artifacts:            artifacts,
+		Images:               cloudImages,
+		RHELCoreOSExtensions: rhcosExt,
 	}
 }
 
diff --git a/stream/rhcos/rhcos.go b/stream/rhcos/rhcos.go
new file mode 100644
index 0000000..4ef3da8
--- /dev/null
+++ b/stream/rhcos/rhcos.go
@@ -0,0 +1,16 @@
+package rhcos
+
+// Extensions is data specific to Red Hat Enterprise Linux CoreOS
+type Extensions struct {
+	AzureImage *AzureImage `json:"azure-image,omitempty"`
+}
+
+// AzureImage represents an Azure cloud image.
+type AzureImage struct {
+	// Release is the source release version
+	Release string `json:"release"`
+	// SourceManagedImage is the URL to an image already stored in Azure infrastructure
+	// that can be copied into an image gallery.  Avoid creating VMs directly
+	// from this URL as that may lead to performance limitations.
+	URL string `json:"url,omitempty"`
+}
diff --git a/stream/stream.go b/stream/stream.go
index c2de9d3..e3f100c 100644
--- a/stream/stream.go
+++ b/stream/stream.go
@@ -3,6 +3,10 @@
 // this API to find cloud images, bare metal disk images, etc.
 package stream
 
+import (
+	"github.com/coreos/stream-metadata-go/stream/rhcos"
+)
+
 // Stream contains artifacts available in a stream
 type Stream struct {
 	Stream        string          `json:"stream"`
@@ -19,6 +23,8 @@ type Metadata struct {
 type Arch struct {
 	Artifacts map[string]PlatformArtifacts `json:"artifacts"`
 	Images    Images                       `json:"images,omitempty"`
+	// RHELCoreOSExtensions is data specific to Red Hat Enterprise Linux CoreOS
+	RHELCoreOSExtensions *rhcos.Extensions `json:"rhel-coreos-extensions,omitempty"`
 }
 
 // PlatformArtifacts contains images for a platform