AD0-E104: Adobe Experience Manager Sites Architect

Adobe Experience Manager Content Services uses its JSON Exporter to deliver content from AEM pages in JSON data-model format.

A reverse proxy can present AEM and the ecommerce platform under one browser-facing origin while routing the relevant requests to their separate back ends. This allows the SPA to request cart and product resources without a cross-origin browser request, while those pages remain directly served by the ecommerce platform. Adobe notes that serving connected applications from the same domain avoids the browser CORS restrictions that apply when they are on different domains.

Online Revision Cleanup performs repository revision cleanup while the AEM instance remains online. In AEM 6.4, it is configured by default to run once per day, so online compaction belongs in the daily maintenance runbook.

Content Fragment variations support intelligent summarization of multi-line text, reducing it to a predefined length while retaining the key information and overall meaning.

AEM Dispatcher serves cached content and retrieves a newly rendered page from its attached Publish instance when the cached content is invalid. Because the stale-content behavior is isolated to one data center, the relevant fault domain is that data center’s Dispatcher and its connected Publish instances; an unavailable or out-of-date Publish instance can intermittently return older content. Adobe documents that Dispatcher uses Publish instances for rendering and that cache invalidation is required when content is activated.