Salesforce Certified Marketing Cloud Engagement Developer – Complete Winter '26 Guide

AMPscript Advanced Functions

Key AMPscript functions: Lookup() retrieves a single DE value; LookupRows() returns a full rowset; Row() and Field() navigate rowsets. FOR/NEXT loops iterate over rowsets. IIF() is the inline conditional; IF/ELSEIF/ENDIF for multi-branch logic. TreatAsContentArea() renders a content area by name. HTTPGet() and HTTPPost() call external APIs from AMPscript. DateAdd() and DateParse() handle date manipulation. The developer exam tests selecting the right function for a given personalisation or data retrieval scenario.

Server-Side JavaScript (SSJS) in Marketing Cloud

SSJS runs on Marketing Cloud servers (not in the browser) using JavaScript 1.6 syntax. Platform functions (Marketing Cloud-specific) are available alongside standard JS. Common uses: HTTP POST to external systems, manipulating Data Extensions, complex data processing. SSJS runs in Email, Landing Pages, and Automation Studio Script activities. Key objects: Platform.Load(), HTTP.Post(), Retrieve(), DataExtension.Add(). The developer exam tests when to use SSJS vs AMPscript — SSJS for complex logic and API integration, AMPscript for personalisation within emails.

CloudPages and Dynamic Content

CloudPages host landing pages, microsites, and smart capture forms. AMPscript-powered CloudPages can capture form data to Data Extensions (SmartCapture). Personalised URLs (PURLs) embed subscriber tokens in CloudPage URLs for pre-filled forms. Dynamic content blocks in emails show different content to different audiences based on rules — configured in Content Builder. The developer builds reusable content blocks with AMPscript logic for personalisation across campaigns.

Marketing Cloud REST and SOAP APIs

REST API: subscriber management (POST /contacts/v1/contacts), Data Extension CRUD (/data/v1/async/dataextensions/), message send (/messaging/v1/messageDefinitionSends/). SOAP API: Subscriber, List, TriggeredSend objects — legacy but still tested. Authentication: obtain access token via OAuth 2.0 client credentials flow, include Bearer token in API headers. The developer exam tests which API endpoint handles a given task and how to construct the request body.

Automation Studio Script Activities

Script Activities run SSJS code within Automation Studio workflows. Common use cases: data manipulation between DE extracts, calling external APIs, complex data quality checks before sends. Script Activities run synchronously — keep them under 30 minutes to avoid timeout. Error handling: use try/catch in SSJS; log errors to a dedicated error DE. The developer designs automation sequences combining Script Activities, SQL Query Activities, Data Extract Activities, and File Transfer Activities for complex data processing pipelines.

AMPscript Proficiency

Master AMPscript data functions: Lookup, LookupRows, LookupOrderedRows, UpdateData, InsertData. Know conditional logic (IIF, CASE), date/string functions, and how to use AMPscript in subject lines, preheaders, and email body.

Server-Side JavaScript (SSJS)

Know SSJS for CloudPages and landing page logic: using Platform.Load to import functions, Core.JavaScript library for data extensions (Rows, Row objects), and how SSJS differs from client-side JavaScript.

REST & SOAP API Usage

Know the key Marketing Cloud REST API endpoints: /contacts/v1/contacts, /messaging/v1/messageDefinitionSends, /data/v1/async, and how to authenticate using OAuth 2.0 client credentials.

Custom Activities in Journey Builder

Know how to build custom Journey Builder activities using the Custom Activity API: the config.json structure, execute/save/publish/validate endpoints, and how activities interact with Journey Builder's UI.

Query Activities & Data Extensions

Know how to write SQL in Automation Studio Query Activities to transform and aggregate data extension data. Understand overwrite vs. append destination actions and how to join data extensions in queries.