diff --git a/doc/_utils/utils.py b/doc/_utils/utils.py
index d91b309ae76..4fe7c7eb208 100644
--- a/doc/_utils/utils.py
+++ b/doc/_utils/utils.py
@@ -128,3 +128,18 @@ def add_google_analytics(app: Sphinx, options: dict) -> None:
 
     options["add_gtm"] = True
     options["gtm_id"] = "GTM-WF4CVFX"
+
+def add_announcement_banner(options: dict) -> None:
+    """Add an announcement banner to the top of the page.
+    Args:
+        options: html theme options.
+    """
+
+    msg = "<b>Important: </b>We're excited to introduce our new technical documentation " \
+           "platform <a href=\"https://docs.nordicsemi.com/\">docs.nordicsemi.com</a>, " \
+           "currently in Beta version. We invite you to explore it and share your feedback. " \
+           "Read more on our " \
+           "<a href=\"https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/introducing-the-unified-documentation-portal/\">DevZone blog</a>. " \
+
+    options["set_default_announcement"] = True
+    options["default_announcement_message"] = msg
diff --git a/doc/kconfig/conf.py b/doc/kconfig/conf.py
index e69b9edb7d9..89646115639 100644
--- a/doc/kconfig/conf.py
+++ b/doc/kconfig/conf.py
@@ -72,3 +72,4 @@ def setup(app):
     app.add_css_file("css/kconfig.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/matter/conf.py b/doc/matter/conf.py
index 8186404ed1a..dc226c2236c 100644
--- a/doc/matter/conf.py
+++ b/doc/matter/conf.py
@@ -71,3 +71,4 @@ def setup(app):
     app.add_css_file("css/matter.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/mcuboot/conf.py b/doc/mcuboot/conf.py
index 2f306aec172..138cc466f6b 100644
--- a/doc/mcuboot/conf.py
+++ b/doc/mcuboot/conf.py
@@ -90,3 +90,4 @@
 
 def setup(app):
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/nrf/conf.py b/doc/nrf/conf.py
index 65468f900cd..b95e329078e 100644
--- a/doc/nrf/conf.py
+++ b/doc/nrf/conf.py
@@ -226,3 +226,4 @@ def setup(app):
     app.add_css_file("css/nrf.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/nrfx/conf.py b/doc/nrfx/conf.py
index ebd22c058a8..a32833fb2e1 100644
--- a/doc/nrfx/conf.py
+++ b/doc/nrfx/conf.py
@@ -70,3 +70,4 @@
 
 def setup(app):
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/nrfxlib/conf.py b/doc/nrfxlib/conf.py
index 38f84250e01..1ade6460fd0 100644
--- a/doc/nrfxlib/conf.py
+++ b/doc/nrfxlib/conf.py
@@ -106,3 +106,4 @@ def setup(app):
     app.add_css_file("css/nrfxlib.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/tfm/conf.py b/doc/tfm/conf.py
index 09a175603dc..78b2f17a727 100644
--- a/doc/tfm/conf.py
+++ b/doc/tfm/conf.py
@@ -81,3 +81,4 @@ def setup(app):
     app.add_css_file("css/tfm.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)
diff --git a/doc/zephyr/conf.py b/doc/zephyr/conf.py
index 9bd73690cc7..1aaa8fa668e 100644
--- a/doc/zephyr/conf.py
+++ b/doc/zephyr/conf.py
@@ -82,3 +82,4 @@ def setup(app):
     app.add_css_file("css/zephyr.css")
 
     utils.add_google_analytics(app, html_theme_options)
+    utils.add_announcement_banner(html_theme_options)