API & Integration
Modern software rarely stands alone, and this domain teaches you how systems actually talk to each other behind the scenes. You will learn to design, connect and secure the APIs and message queues that power everything from banking apps to online stores. Courses cover the leading integration platforms companies already run, plus the patterns that keep large systems reliable under real traffic. By the end, you can plug any two systems together with confidence, not guesswork.
- MuleSoft
- Apache Kafka
- Postman API
- Google Apigee
- Kong
Domain Scope
Where API & Integration fits in real work today
36+
Courses in this domain
#20
Of 20 by catalogue depth
8
Career tracks mapped
6
Core technologies covered
Depth against nearby domains
This domain and its closest neighbours out of 20, ranked by how many courses each catalogue carries. Longer bar means a deeper catalogue.
- IAM & Zero Trust#17 · 66
- Databases & Vector DBs#18 · 47
- Real Estate#19 · 47
- API & Integration#20 · 36
API & Integration holds 1% of the 20-domain catalogue.
How hands-on each technology gets
An editorial reading of how much of the work is keyboard-on time rather than concepts. Not a course count.
- MuleSoft75
- Apache Kafka85
- Postman API45
- Google Apigee65
- Kong60
- OpenAPI & Contracts55
Higher means more lab, build and troubleshooting work; lower means more concept, policy and design work.
Career Tracks
8 routes through this domain
Ordered foundational to specialised. Bar length is how much weight the track carries inside the domain — most learners complete one or two of these, not all eight.
- API Design & REST FundamentalsBeginner · 3–4 wks
- API Testing & DocumentationBeginner · 2–4 wks
- Integration Patterns & MiddlewareIntermediate · 5–7 wks
- Event Streaming with KafkaIntermediate · 5–7 wks
- API Gateways & Traffic PolicyIntermediate · 4–6 wks
- API Security & OAuth FlowsAdvanced · 4–5 wks
- Enterprise iPaaS DeliveryAdvanced · 6–8 wks
- Observability & ReliabilityAdvanced · 4–6 wks
The path most learners take
Three steps in sequence, then one specialisation. Picking a single branch is normal — finishing all four is not the expectation.
Step 1
API Design & REST Fundamentals
Step 2
API Testing & Documentation
Step 3
Integration Patterns & Middleware
Then one of
Before you start
What to have ready before the foundations track. Everything else is taught from scratch.
- Can read JSON and follow an HTTP request
- Basic scripting in any language
- Some exposure to databases helps
- No middleware experience needed to start
Technology Reference
What you actually learn, tool by tool
- MuleSoft75Anypoint Platform, DataWeave transforms, connectors and API-led design
- Apache Kafka85Topics, partitions, consumer groups, Kafka Connect and Streams
- Postman API45Collections, environments, contract tests and automated API monitoring
- Google Apigee65Proxy design, quota and spike policies, developer portals, analytics
- Kong60Declarative gateway config, plugins, rate limiting, service mesh basics
- OpenAPI & Contracts55Spec-first design, schema validation, versioning and breaking-change rules
The full technology list for this domain is MuleSoft, Apache Kafka, Postman API, Google Apigee & Kong — the six above are the ones the catalogue goes deepest on.
Why This Domain, Right Now
API & Integration is worth the hours
Integration work is where most enterprise budgets quietly go, and it stays in demand precisely because every new platform a company buys has to be wired into the ones it already runs.
36+
Courses in this domain
#20
Of 20 by catalogue depth
8
Career tracks mapped
6
Core technologies covered
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