Salesforce API's

 Application Programming Interface(API), which is a software intermediary that allows two applications to talk to each other.

Each time you use an app like Facebook, send an instant message, or check the weather on your phone, you’re using an API.

Below are some of the APIS that we use in Salesforce.

API	When to Use
SOAP API	Integrate your org’s data with other applications using standard SOAP protocols.
REST API	Access objects in your org using standard REST protocols.
Metadata API	Manage customizations in your org and build tools that manage your metadata model.
Tooling API	Build custom development tools for platform applications.
Marketing Cloud API	Expose Marketing Cloud capabilities with the REST API and get comprehensive access to most email functionality with the SOAP API.
Bulk API	Load, delete, and perform asynchronous queries on large data sets.
Streaming API	Send and receive notifications securely and efficiently. Notifications can reflect data changes in your org, or custom events.
Connect REST API	Build UI for Commerce, CMS-Managed Content, Experience Cloud Sites, Files, Notifications, Topics, and more.
Mobile SDK	While it’s technically a software development kit, it’s worth including here. Integrate Native or Hybrid mobile apps directly with Salesforce.