Marketing Cloud API

Intro to Marketing Cloud APIs
REST API
SOAP Web Service API
SOAP API Performance
Get Started with the SOAP API
Work with SOAP Web Service API
Methods
Objects
Simple Development Scenarios
Supported Operations for Objects and Methods
Technical Articles
General
Administration
Add a User to an Account
Create an Account
Create an Agency Client Object
Access Child Account Objects
Manage Enterprise 2.0 Accounts
Retrieve Account Object Using the CustomerKey Attribute
Set User Permissions
Use ClientID for Account Association
Rate Limiting
Asynchronous Processing
Automation Studio
Campaigns and Programs
Code Samples by Language
Data Extensions
Emails
Filters
Groups
Import Definition and Activity
Portfolio
Scheduled Messages
Send Definitions and Email Message Interactions
Subscriber Attributes
Subscriber Lists
Subscribers
Tracking
Triggered Sends
Marketing Cloud for Appexchange API Guide
API Best Practices and Use Cases
API Errors

Administration

The following are administration technical articles for SOAP API.