AppDynamics Cloud APIs let you extend and customize various aspects of the application such as cloud connections, data ingestion, authentication, and so on. AppDynamics Cloud offers several APIs. 

Service Principles

You must use Service Principals to enable your developed code to securely connect to AppDynamics public APIs on your Cloud Tenant. Service Principals are identities, represented as code, used by applications, services, and automation tools to access specific resources. These API calls use Open Authentication 2.0 (OAuth2) token-based authentication.

You first need a Client ID and Secret to generate an access token. You then use the access token for API access calls into your Cloud Tenant.

It is best to create one Service Principal for each integration project.

You can use these available APIs: 

The AppDynamics Application Principal Management API is currently beta and is subject to change. If you adopt a beta API, it may not be fully compatible with future versions.

Cloud Connections

AppDynamics Cloud collects data from cloud platforms and correlates that data with the underlying cloud infrastructure. To create cloud connections, you must connect AppDynamics Cloud to one more cloud provider account(s). AppDynamics Cloud provides HTTP REST APIs to automate the process of creating and managing cloud connections at scale. See AppDynamics Cloud Connections API.

Common Ingestion Service

Traditionally, the AppDynamics Cloud platform ingests the data that the applications and services generate in multiple ways, which is not an efficient way to store and correlate data. Therefore, AppDynamics Cloud introduces the Common Ingestion Service API to ingest the data in a single, efficient way. AppDynamics uses OpenTelemetry as the data ingestion standard. OpenTelemetry is a set of APIs, SDKs, tooling, and integrations designed to create and manage telemetry data such as traces, metrics, and logs. Using the Common Ingestion Service API, AppDynamics and third-party agents can publish OpenTelemetry metric data to the common ingestion pipeline. See Common Ingestion Service API.