SaaS SaaS Integration and APIs 2

Question 1

What is GraphQL and how does it differ from REST for SaaS APIs?

Accepted Answer

A query language for APIs where the client specifies exactly what data it needs in a single request, eliminating over-fetching and under-fetching compared to fixed REST endpoints

Answer

GraphQL lets API consumers request exactly the fields they need in one query, avoiding multiple REST calls for related data (under-fetching) or receiving unwanted fields (over-fetching).

Question 2

What is idempotency in API design and why does it matter for SaaS integrations?

Accepted Answer

Making the same API call multiple times produces the same result as calling it once, preventing duplicate records when retrying failed requests

Answer

Idempotent operations (GET, PUT, DELETE) produce the same result if repeated; POST operations are not inherently idempotent, so SaaS APIs use idempotency keys to safely retry payment and order creation calls.

Question 3

What is API versioning and why is it important for SaaS integrations?

Accepted Answer

Maintaining backward-compatible API versions (e.g., /v1/, /v2/) so existing integrations don't break when the API evolves

Answer

API versioning lets SaaS providers introduce breaking changes in new versions (v2) while keeping v1 running for existing integrations, giving customers time to migrate without service disruption.

Question 4

What is a SaaS marketplace (e.g., Salesforce AppExchange, HubSpot App Marketplace)?

Accepted Answer

A curated directory of third-party applications and integrations that extend the core SaaS platform's functionality

Answer

SaaS marketplaces list vetted partner integrations and add-ons, creating a network effect where the platform becomes more valuable as the ecosystem grows — and generating referral revenue for the platform vendor.

Question 5

What is bi-directional sync in SaaS data integration?

Accepted Answer

Synchronizing data between two systems so changes made in either system are reflected in the other in near real-time

Answer

Bi-directional sync keeps two systems (e.g., CRM and marketing automation) in continuous alignment by propagating changes from either side, preventing data divergence across tools.

SaaS Practice Test

SaaS Practice Test

SaaS SaaS Integration and APIs 2