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Why Companies Are Leaving Adobe Experience Manager

Adobe Experience Manager was built for a different era. When it launched, monolithic Java application servers were the norm, content lived in JCR repositories, and enterprises just accepted six-figure licensing as the cost of doing business. That era is over.

The math is brutal: AEM licenses run $200K-$500K+ per year. Pile on AEM Managed Services hosting, custom OSGi bundles that only three people on Earth actually understand, and a shrinking talent pool commanding $180-250/hr -- and your total cost of ownership starts making CFOs physically uncomfortable.

Meanwhile, a headless stack with Sanity and Next.js on Vercel delivers better performance, better developer experience, and better content authoring. For roughly 97% less per year.

We've migrated mid-market companies and enterprise teams off AEM. Here's exactly what that process looks like.

The Real Problems With AEM

Licensing That Scales Against You

AEM's licensing model is designed to extract maximum value from enterprises. Traffic grows? Costs grow. You add sites? Costs grow. Adobe's annual renewal conversations aren't really conversations -- they're hostage negotiations. Moving to AEM as a Cloud Service doesn't fix this; it often makes things worse with consumption-based pricing that's nearly impossible to forecast.

Java/OSGi Developer Scarcity

AEM development requires deep expertise in Java, OSGi, Apache Sling, JCR, and Adobe's proprietary APIs. That talent pool is shrinking fast. Junior developers don't want to learn OSGi bundles -- they want React, TypeScript, and modern tooling. Every AEM developer who retires or jumps to a modern stack is one you can't replace at any reasonable cost.

Deployment Velocity That Kills Innovation

AEM deployments are measured in hours, not seconds. Content packages need to be built, tested across author and publish instances, replicated through dispatchers, and validated against CDN caches. A typical AEM release cycle burns 4-8 hours on deployment and validation alone. On a modern headless stack, the same change deploys in under 60 seconds with automatic rollback.

Content Architecture Lock-in

AEM Content Fragments and Experience Fragments are powerful, but they're proprietary. Your content model, your templates, your personalization rules -- all of it lives inside Adobe's ecosystem. Every year you stay, the migration cost grows as more content accumulates in formats only AEM understands.

Dispatcher and CDN Complexity

AEM's dispatcher layer is a notorious source of caching bugs, security vulnerabilities, and operational overhead. Teams spend weeks debugging dispatcher rules that modern edge networks would handle automatically.

What You Get With Headless

Sanity as Your Content Platform

Sanity replaces AEM Author with a content platform that's genuinely enjoyable to use. Real-time collaborative editing. Portable text that renders anywhere. A schema system defined in code, versioned in Git, and deployable in seconds. GROQ queries that make JCR/SQL2 look like punishment.

Sanity's pricing is transparent: the Team plan runs ~$500/month and covers most mid-market needs. Compare that to your AEM renewal number.

Next.js on Vercel for Delivery

Next.js replaces AEM's publish tier, dispatcher, and CDN -- all of it. Server-side rendering, static generation, incremental static regeneration, and edge middleware cover every delivery pattern AEM supports, but faster. Vercel's global edge network delivers sub-300ms TTFB without dispatcher configs, replication agents, or flush rules.

Replacing AEM Target With Modern Personalization

AEM Target (Adobe Target) is another six-figure line item. We replace it with Segment for audience data and Vercel Edge Middleware for personalization logic. Edge Middleware runs in under 1ms at the CDN layer -- faster than Adobe Target's client-side JavaScript that blocks rendering. Same A/B testing and personalization capabilities, without the Adobe tax.

Content Fragment Migration

AEM Content Fragments map cleanly to Sanity documents. We build automated migration pipelines that:

1. Export Content Fragment models and instances via AEM's Assets HTTP API
2. Transform the data model to Sanity schemas
3. Migrate all content including references, variations, and associated metadata
4. Validate content integrity with automated diffing

Experience Fragments need more nuance since they often contain layout logic. We decompose them into reusable Sanity components -- which actually gives content editors more flexibility than the original AEM authoring experience ever did.

Our AEM Migration Process

Phase 1: Discovery and Content Audit (2-3 weeks)

We audit your AEM instance -- content models, templates, components, workflows, integrations, and personalization rules. Every AEM concept gets mapped to its headless equivalent. We identify what can be automated versus what needs manual migration, and you get a complete migration plan with line-item cost estimates.

Phase 2: Platform Build (6-10 weeks)

We build the headless platform in parallel: Sanity schemas, Next.js frontend, Vercel deployment pipeline, and integration layer. This includes rebuilding AEM components as React components, standing up preview environments for content editors, and wiring in personalization with Edge Middleware.

Phase 3: Content Migration (3-6 weeks)

Automated migration pipelines move your content from AEM to Sanity. We handle Content Fragments, Experience Fragments, DAM assets (migrated to Sanity's asset pipeline or Cloudinary), and taxonomy structures. Every piece of content gets validated against the source.

Phase 4: SEO Preservation and Cutover (2-3 weeks)

This is where AEM migrations go wrong if you're not careful. We implement:

• Complete URL mapping from AEM's path-based URLs to the new structure
• 301 redirect chains covering every published URL, including vanity URLs and shortened paths
• Structured data migration ensuring schema markup transfers correctly
• XML sitemap generation via Next.js API routes
• Canonical tag preservation across all localized content
• Google Search Console monitoring for 90 days post-launch

We've executed AEM migrations with zero ranking loss. The key is catching every URL -- AEM's sling:alias, sling:vanityPath, and custom URL mappings all need to be accounted for.

Timeline and Investment

A typical AEM-to-headless migration for a mid-market company runs 14-22 weeks and costs $120K-$250K as a one-time project investment. That sounds significant until you run the ROI numbers:

• Year 1 savings: $150K-$450K in eliminated AEM licensing
• Ongoing annual savings: $194K+ (AEM license minus Sanity + Vercel costs)
• Developer cost reduction: 40-60% lower rates for React/Next.js talent vs. AEM specialists
• Deployment velocity: From hours to seconds, multiplying your team's output

The migration typically pays for itself within the first year -- often within the first renewal cycle you skip.

Who This Migration Is For

This engagement is built for mid-market companies and enterprise teams running AEM 6.5 or AEM as a Cloud Service who are staring down a renewal decision. If your renewal is 6-12 months away, now is the time to start. We can have you fully migrated before your next payment hits.

If you're running AEM Sites with Content Fragments, Experience Fragments, and Adobe Target -- this is our exact wheelhouse. We've built the tooling, and we know where the bodies are buried.

Learn more about our headless CMS development capabilities and our Next.js development practice.