diff --git a/docs/syntax/substitutions.md b/docs/syntax/substitutions.md
index 331cfd44a..92b23277d 100644
--- a/docs/syntax/substitutions.md
+++ b/docs/syntax/substitutions.md
@@ -236,3 +236,9 @@ id:
 ```
 
 A shorthand format is also available. Using `{{.id}}` is equivalent to `{{product.id}}`.
+
+## Previous stack version
+
+Products with a matching legacy URL mapping can access their previous version:
+
+Example: `{{version.stack.previous}}` produces {{version.stack.previous}}.
diff --git a/src/Elastic.Documentation.Configuration/BuildContext.cs b/src/Elastic.Documentation.Configuration/BuildContext.cs
index e1c1c93d0..6459ab7ac 100644
--- a/src/Elastic.Documentation.Configuration/BuildContext.cs
+++ b/src/Elastic.Documentation.Configuration/BuildContext.cs
@@ -110,7 +110,7 @@ public BuildContext(
 			DocumentationSourceDirectory = ConfigurationPath.Directory!;
 
 		Git = gitCheckoutInformation ?? GitCheckoutInformation.Create(DocumentationCheckoutDirectory, ReadFileSystem);
-		Configuration = new ConfigurationFile(this, VersionsConfiguration, ProductsConfiguration);
+		Configuration = new ConfigurationFile(this, VersionsConfiguration, ProductsConfiguration, LegacyUrlMappings);
 		GoogleTagManager = new GoogleTagManagerConfiguration
 		{
 			Enabled = false
diff --git a/src/Elastic.Documentation.Configuration/Builder/ConfigurationFile.cs b/src/Elastic.Documentation.Configuration/Builder/ConfigurationFile.cs
index a5b1c94de..0703f8c2d 100644
--- a/src/Elastic.Documentation.Configuration/Builder/ConfigurationFile.cs
+++ b/src/Elastic.Documentation.Configuration/Builder/ConfigurationFile.cs
@@ -4,6 +4,7 @@
 
 using System.IO.Abstractions;
 using DotNet.Globbing;
+using Elastic.Documentation.Configuration.LegacyUrlMappings;
 using Elastic.Documentation.Configuration.Products;
 using Elastic.Documentation.Configuration.Suggestions;
 using Elastic.Documentation.Configuration.TableOfContents;
@@ -63,7 +64,7 @@ public record ConfigurationFile : ITableOfContentsScope
 		Project is not null
 		&& Project.Equals("Elastic documentation", StringComparison.OrdinalIgnoreCase);
 
-	public ConfigurationFile(IDocumentationSetContext context, VersionsConfiguration versionsConfig, ProductsConfiguration productsConfig)
+	public ConfigurationFile(IDocumentationSetContext context, VersionsConfiguration versionsConfig, ProductsConfiguration productsConfig, LegacyUrlMappingConfiguration legacyUrlMappingsConfig)
 	{
 		_context = context;
 		ScopeDirectory = context.ConfigurationPath.Directory!;
@@ -167,7 +168,11 @@ public ConfigurationFile(IDocumentationSetContext context, VersionsConfiguration
 				}
 			}
 
-			foreach (var (id, system) in versionsConfig.VersioningSystems)
+			foreach (var (id, system, previousVersion) in
+					 versionsConfig.VersioningSystems.Select(kvp =>
+						 (kvp.Key, kvp.Value,
+							 legacyUrlMappingsConfig.Mappings.FirstOrDefault(m =>
+								 m.Product.VersioningSystem == kvp.Value)?.LegacyVersions.FirstOrDefault() ?? string.Empty)))
 			{
 				var name = id.ToStringFast(true);
 				var alternativeName = name.Replace('-', '_');
@@ -175,8 +180,9 @@ public ConfigurationFile(IDocumentationSetContext context, VersionsConfiguration
 				_substitutions[$"version.{alternativeName}"] = system.Current;
 				_substitutions[$"version.{name}.base"] = system.Base;
 				_substitutions[$"version.{alternativeName}.base"] = system.Base;
+				_substitutions[$"version.{name}.previous"] = previousVersion;
+				_substitutions[$"version.{alternativeName}.previous"] = previousVersion;
 			}
-
 			foreach (var product in productsConfig.Products.Values)
 			{
 				var alternativeProductId = product.Id.Replace('-', '_');