CL-324 Cloud & Platform

API Design, Gateways & Lifecycle Management

Design APIs consumers adopt quickly and that you can change without breaking them. Learners model resources and write the OpenAPI contract before the implementation, add pagination and idempotency keys where retries demand them, apply rate limits and quotas at the gateway, and run a deprecation with a migration window backed by consumer telemetry. The exit artefact is a versioned API with a portal a new consumer can call within minutes.

B3Practitioner

6modules

42skill atoms

2role journeys

Curriculum

What this course covers.

6 modules, 42 named skill atoms. Expand any module to see them.

1Resource Modelling and REST Conventions7 skill atoms

resources as nouns with stable identifiersHTTP verbs and their idempotency propertiesstatus codes that mean what they saynesting depth and sub-resource limitsfiltering, sorting and sparse fieldsetserror bodies with a machine-readable codeREST, GraphQL and gRPC chosen on constraints

2OpenAPI as the Contract7 skill atoms

spec written before the implementationschemas, components and reuseclient and server generation from the speccontract tests validating live responsesexamples doubling as documentationSpectral linting in the pipelinedrift between spec and running service detected

3Versioning and Deprecation7 skill atoms

additive change as non-breaking by definitionURI, header and media-type versioning comparedSunset and Deprecation response headersdeprecation window sized from consumer telemetrymigration guide shipped with the changerunning two versions and what it costsforced cutover as the last resort

4Pagination, Idempotency and Reliability7 skill atoms

offset against cursor pagination and deep-page coststable sort keys for consistent pagesidempotency keys on POST with stored responsesretry-safe semantics documented for clientsconditional requests with ETag and If-Matchpartial failure in bulk endpointslong-running operations modelled as resources

5Gateways, Rate Limits and Quotas7 skill atoms

gateway duties across auth, routing and transformationlogic that belongs in the service not the gatewaytoken bucket against sliding window limitingper-key, per-tenant and per-endpoint quotas429 responses carrying Retry-Afterburst allowance against sustained ratethe gateway as a single point of failure

6Developer Portals and Adoption7 skill atoms

portal carrying reference, guides and a quickstartself-service key issuance with scopessandbox environment seeded with usable datatime to first successful call as the KPIchangelog and status page for consumersusage analytics per consumer and endpointsupport path feeding back into design

Where it fits

CL-324 in the role journeys.

This course appears in 2 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

Cloud / Solutions Architect

Practitioner stage

CL-311→CL-324→CL-301

Full-Stack Developer

Professional stage

DEV-214→CL-324→DEV-502

Roles this course serves

Cloud / Solutions Architect Full-Stack Developer

The capability ladder

This course is authored to band B3.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence

AwareUnderstands concepts and vocabulary; uses tools with guidance

Knowledge checks

FoundationPerforms standard tasks correctly in familiar contexts

Guided labs, autograded exercises

PractitionerDelivers complete pieces of work independently

Scenario labs, proctored hands-on exams

ProfessionalHandles production-grade complexity, trade-offs and failure modes

Break-fix drills, design defenses

AdvancedEngineers systems end-to-end under constraints; leads others

Rubric-scored capstones, vivas

ExpertSets direction; recognised authority across teams

Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Other Cloud courses at this level.

CL-107

Run CL-324 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

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API Design, Gateways & Lifecycle Management

What this course covers.

CL-324 in the role journeys.

Cloud / Solutions Architect

Full-Stack Developer

Roles this course serves

This course is authored to band B3.

Other Cloud courses at this level.

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Run CL-324 for your team.