SaaS SaaS Integration and APIs

Question 1

What is REST and why is it the dominant API style for SaaS integrations?

Accepted Answer

An architectural style using HTTP methods (GET, POST, PUT, DELETE) on resources via URLs, favored for its simplicity, statelessness, and wide tooling support

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A database query language like SQL, favored for its data manipulation capabilities

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A binary communication protocol designed for low-latency microservice communication

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A standard for authenticating users across multiple SaaS platforms

Question 2

What is OAuth 2.0 and why is it used in SaaS integrations?

Accepted Answer

An open standard that allows third-party applications to access a user's SaaS data without exposing their credentials, using scoped access tokens

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A database authorization framework for controlling row-level access

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A symmetric encryption protocol for securing API payloads

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A single sign-on protocol that replaces username/password authentication

Question 3

What is an iPaaS (Integration Platform as a Service) and what problem does it solve?

Accepted Answer

A cloud-based platform that connects multiple SaaS applications and automates workflows between them, eliminating the need for custom point-to-point integrations

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An infrastructure platform for hosting SaaS applications

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A monitoring platform for tracking the performance of SaaS APIs

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A pricing management platform for SaaS billing automation

Question 4

What is rate limiting in SaaS APIs and why is it implemented?

Accepted Answer

Restricting the number of API requests a client can make in a given time window to protect infrastructure from abuse and ensure fair resource distribution

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Limiting the number of users who can access a paid tier simultaneously

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Throttling data export speeds to manage storage costs

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Limiting the file upload size in SaaS document management tools

Question 5

What is an API key and how is it used for SaaS authentication?

Accepted Answer

A secret string passed in request headers or parameters to identify and authenticate an application making API calls

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A physical hardware token used for multi-factor authentication

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A public certificate used to verify the identity of a SaaS server

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An encoded JSON object containing user identity and permissions

Question 6

What is pagination in SaaS API design and why is it necessary?

Accepted Answer

Returning large datasets in smaller chunks (pages) so API responses remain fast and clients control how much data they retrieve at once

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Rendering multi-page PDF exports from SaaS data

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Splitting a single API endpoint into multiple versioned endpoints

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A UI pattern for displaying long lists of records in the SaaS application interface