The “why” behind every step

Everything the migration steps lean on — concepts, decisions, and reference — organized so you can browse it directly, or reach any topic in context via a step's “Why?” link.

Concepts

Why Web SDK

Why the Adobe Web SDK replaces AppMeasurement — the shift from browser-side collection to the Edge Network, in plain terms.

The Edge Network

What the Adobe Edge Network is and why data is now assembled there instead of in the browser with the Web SDK.

Schema & XDM

What an XDM schema is and the shape all Web SDK data must take when migrating from AppMeasurement.

xdm vs data object

The xdm object versus the data object in the Web SDK — the decision that shapes your whole migration path.

Identity & ECID

How visitor identity and the ECID work in the Web SDK, and the continuity cliff to avoid during migration.

The consent model

How consent works in the Adobe Web SDK — gating an event queue rather than a single beacon — with your CMP.

Context data

The context data path in the Web SDK — sending Analytics context data through the Edge during migration.

Data-layer design

How to design a data layer the Web SDK can read cleanly when migrating from AppMeasurement.

Decisions

The strategic forks

Five decisions to make up front before migrating Adobe Analytics from AppMeasurement to the Web SDK.

The Full Extension

The Full Extension (ExperienceEvent) field group that auto-maps Analytics variables into your XDM schema.

The Profile lock

Why you don't enable the Profile dataset on your datastream yet when migrating to the Web SDK.

Validation report suite

Why to send Web SDK data to a validation report suite, not your live RSID, while proving the migration.

The datastream

What the datastream is and how it bridges the Edge Network to your Adobe Analytics report suite.

One library (alloy)

How the Web SDK library (alloy.js) is loaded and configured when migrating from AppMeasurement.

Reference

Variable groups & schema map

Where each AppMeasurement variable group lives in your XDM schema after migrating to the Web SDK.

Variable mapping catalog

A legacy-to-XDM lookup mapping AppMeasurement eVars, props, and events to Web SDK XDM fields.

Plugin cookbook

How to move doPlugins logic to onBeforeEventSend when migrating Adobe Analytics plugins to the Web SDK.

Cookie reference

Which cookies change with the Web SDK and how to re-teach your CMP after migrating from AppMeasurement.

Rule order & sendEvent

How to order tag rules and the sendEvent call to fix the race condition in a Web SDK migration.

Glossary

Key Adobe Web SDK migration terms — XDM, datastream, Edge Network, ECID, alloy — at a glance.

Program & strategy

Validation & parity

The side-by-side method for validating data parity between AppMeasurement and the Web SDK.

Rollout & decommission

Phasing, cutover, and rollback for rolling out the Web SDK and decommissioning AppMeasurement.

Governance & ownership

Who owns and maintains the Web SDK implementation, schema, and datastream after migrating from AppMeasurement.

The forward path

Where the Web SDK migration leads next — Customer Journey Analytics, Event Forwarding, and Target.