---
title: Why upgrade to CMS 13?
slug: cms-13/docs/why-upgrade-my-cms
docTags: 
createdAt: 2026-07-30T20:22:11.634Z
---

CMS 13 is the next generation of the content management platform from Optimizely. It supports faster publishing, modern composable architectures, AI-assisted workflows, and Optimizely Graph-powered content delivery.

CMS 13 introduces a unified editing experience, built-in generative engine optimization (GEO), native Graph-based search, and deeper integrations across the Optimizely platform. CMS 13 reduces developer dependency, improves discoverability in both traditional search and AI systems, and provides a foundation aligned with the .NET platform.

CMS 13 supports:

- Independent content creation and publishing for marketers.
- Unified search and content retrieval through Graph.
- Composable integrations with external systems.
- Long-term platform scalability and performance improvements.

## Key features of CMS 13

- **Visual Builder** – Build, preview, and publish pages in one interface with drag-and-drop editing and responsive preview.
- **External Content** – Manage and reuse content from external systems (DAM, CRM, APIs) directly inside the CMS workspace.
- **Optimizely Graph Integration** – Provides unified content indexing, semantic search, analytics, and generation capabilities across the platform.
- **Content Model Agent** – Transform any URL or image into a production-ready content model.
- **Generative Engine Optimization (GEO)** – Adds AI search optimization including metadata, Q\&A fields, and structured content signals.
  - **GEO Recommendations Agent** – Evaluates pages against generative engine optimization best practices.
  - **GEO Analytics** – Tracks how AI crawlers access, read, and reference your content.
- **Schema and Answers Agent** – Structures content relationships and metadata so AI understands site hierarchy and meaning.
- **Embedded DAM** – Provides in-context digital asset management with tagging and reuse inside the CMS.
- **Modern .NET foundation** – Aligns with .NET 10 for improved security, performance, and long-term platform support.
- **Unified Optimizely platform alignment** – Enables tighter integration with CMP, personalization, and Optimizely Graph services.

## CMS 13 architecture and implementation options

CMS 13 provides multiple ways to build and deliver websites:

- **CMS 13 (core platform)** – The main platform built on the latest ASP.NET Core. Use it for traditional server-rendered sites and to manage content centrally.
- **Headless sites with Graph** – Use the [Graph API](https://docs.developers.optimizely.com/platform-optimizely/update/docs/using-the-graphql-api) to build sites with modern JavaScript frameworks such as React or Angular. SDKs are available for supported frameworks to simplify integration.
- [REST API for integrations](docId\:MM1lPFKxUy4D2kTAk9-T3) – Designed for connecting external systems and services, not for building headless websites.