FaaS (Function as a Service)

● Deploy individual functions executed in response to events/triggers

● Provider manages infrastructure and auto-scales functions

● Example: AWS Lambda, Google Cloud Functions

● Real-world Example: Processing images using AWS Lambda

SaaS (Software as a Service)

● Software provided over the internet, eliminating the need for installation

● Provider manages infrastructure, application, and data

● Example: Salesforce, Microsoft Office 365

● Real-world Example: Using Salesforce for CRM

Serverless

● Cloud provider manages infrastructure and auto-scales resources

● Pay only for resources consumed

● Example: Azure Functions with Azure Cosmos DB, AWS Lambda with Amazon

DynamoDB

● FaaS is a specific implementation of serverless computing