diff --git a/Sources/SwiftDocC/Indexing/Navigator/RenderNode+NavigatorIndex.swift b/Sources/SwiftDocC/Indexing/Navigator/RenderNode+NavigatorIndex.swift
index 21fc7aa5f..a7d918453 100644
--- a/Sources/SwiftDocC/Indexing/Navigator/RenderNode+NavigatorIndex.swift
+++ b/Sources/SwiftDocC/Indexing/Navigator/RenderNode+NavigatorIndex.swift
@@ -125,11 +125,7 @@ struct RenderNodeVariantView: NavigatorIndexableRenderNodeRepresentation {
 
 extension NavigatorIndexableRenderMetadataRepresentation {
     var isBeta: Bool {
-        guard let platforms, !platforms.isEmpty else {
-            return false
-        }
-        
-        return platforms.allSatisfy { $0.isBeta == true }
+        return platforms?.isBeta ?? false
     }
 }
 
diff --git a/Sources/SwiftDocC/Infrastructure/External Data/OutOfProcessReferenceResolver.swift b/Sources/SwiftDocC/Infrastructure/External Data/OutOfProcessReferenceResolver.swift
index e4a737fa7..88c381615 100644
--- a/Sources/SwiftDocC/Infrastructure/External Data/OutOfProcessReferenceResolver.swift	
+++ b/Sources/SwiftDocC/Infrastructure/External Data/OutOfProcessReferenceResolver.swift	
@@ -590,11 +590,7 @@ extension OutOfProcessReferenceResolver {
        
         /// A value that indicates whether this symbol is under development and likely to change.
         var isBeta: Bool {
-            guard let platforms, !platforms.isEmpty else {
-                return false
-            }
-            
-            return platforms.allSatisfy { $0.isBeta == true }
+            return platforms?.isBeta ?? false
         }
         
         /// Creates a new resolved information value with all its values.
diff --git a/Sources/SwiftDocC/Infrastructure/Link Resolution/ExternalPathHierarchyResolver.swift b/Sources/SwiftDocC/Infrastructure/Link Resolution/ExternalPathHierarchyResolver.swift
index 0d145a597..f4db774fb 100644
--- a/Sources/SwiftDocC/Infrastructure/Link Resolution/ExternalPathHierarchyResolver.swift	
+++ b/Sources/SwiftDocC/Infrastructure/Link Resolution/ExternalPathHierarchyResolver.swift	
@@ -1,7 +1,7 @@
 /*
  This source file is part of the Swift.org open source project
 
- Copyright (c) 2023-2024 Apple Inc. and the Swift project authors
+ Copyright (c) 2023-2025 Apple Inc. and the Swift project authors
  Licensed under Apache License v2.0 with Runtime Library Exception
 
  See https://swift.org/LICENSE.txt for license information
@@ -184,11 +184,7 @@ private extension Sequence<DeclarationRenderSection.Token> {
 private extension LinkDestinationSummary {
     /// A value that indicates whether this symbol is under development and likely to change.
     var isBeta: Bool {
-        guard let platforms, !platforms.isEmpty else {
-            return false
-        }
-        
-        return platforms.allSatisfy { $0.isBeta == true }
+        return platforms?.isBeta ?? false
     }
     
     /// Create a topic render render reference for this link summary and its content variants.
diff --git a/Sources/SwiftDocC/Model/Rendering/Symbol/AvailabilityRenderMetadataItem.swift b/Sources/SwiftDocC/Model/Rendering/Symbol/AvailabilityRenderMetadataItem.swift
index 8d8a137fa..a185ff8a3 100644
--- a/Sources/SwiftDocC/Model/Rendering/Symbol/AvailabilityRenderMetadataItem.swift
+++ b/Sources/SwiftDocC/Model/Rendering/Symbol/AvailabilityRenderMetadataItem.swift
@@ -1,7 +1,7 @@
 /*
  This source file is part of the Swift.org open source project
 
- Copyright (c) 2021-2023 Apple Inc. and the Swift project authors
+ Copyright (c) 2021-2025 Apple Inc. and the Swift project authors
  Licensed under Apache License v2.0 with Runtime Library Exception
 
  See https://swift.org/LICENSE.txt for license information
@@ -163,3 +163,27 @@ public struct AvailabilityRenderItem: Codable, Hashable, Equatable {
         self.isBeta = isBeta
     }
 }
+
+extension Array where Array.Element == AvailabilityRenderItem {
+    /// Determines whether all platforms in the array are in beta.
+    ///
+    /// This property returns `true` if every availability item in the array has its `isBeta` property set to `true`,
+    /// indicating that the symbol is introduced in a beta version across all platforms. If the array is empty,
+    /// this property returns `false`, as an item with no platform availability information is not considered
+    /// to be in beta.
+    ///
+    /// This computed property centralizes the beta determination logic to avoid code duplication across multiple
+    /// components that need to check whether a symbol is in beta based on its platform availability.
+    /// `NavigatorIndexableRenderMetadataRepresentation`, `OutOfProcessReferenceResolver.ResolvedInformation` and `LinkDestinationSummary` all store an array of ``AvailabilityRenderItem`` and need to determine beta status based on platform availability,
+    /// so it is convenient to de-duplicate the shared logic here.
+    ///
+    /// - Returns: `true` if all platforms in the array are in beta; `false` if the array is empty or if any
+    ///   platform is not in beta.
+    var isBeta: Bool {
+        guard !self.isEmpty else {
+            return false
+        }
+        
+        return self.allSatisfy { $0.isBeta == true }
+    }
+}