Google Cloud Architect Cheat Sheet: PCA

May 1, 2026

Review a compact Google Cloud Professional Cloud Architect cheat sheet for architecture design, IAM, networking, reliability, migration, security, cost, and operations before sample practice.

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Use this cheat sheet before Google Cloud Professional Cloud Architect sample questions. The route rewards architecture trade-off reasoning, not isolated service recall.

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Snapshot

Item	Route cue
Vendor	Google Cloud
Certification	Professional Cloud Architect
Main skill	secure, reliable, scalable, cost-aware architecture design
IT Mastery status	sample questions available

Architecture checklist

Area	What to know	Common trap
Requirements	business goals, constraints, stakeholders, and risk	solving the technical detail before reading the business requirement
Governance	organization, folders, projects, IAM, policies, billing	using labels as if they enforce boundaries
Networking	VPCs, subnets, load balancing, private access, hybrid paths	changing compute when the failure is routing or firewall scope
Reliability	zones, regions, health checks, failover, backup, recovery	confusing backup with high availability
Security	least privilege, encryption, segmentation, audit evidence	granting broad access to simplify deployment
Operations	monitoring, deployment, release, incident response, optimization	ignoring how the solution will be operated after launch

Must-know distinctions

Organization policy versus IAM: policy constrains what can be done; IAM grants who can do it.
Regional versus zonal design: choose scope based on failure tolerance.
Managed service versus self-managed service: use managed services when control requirements do not justify operational burden.
Migration versus modernization: rehosting, replatforming, and refactoring have different risk and value.
Performance versus cost: the best answer satisfies the requirement without unnecessary capacity or complexity.

Common traps

Picking the most feature-rich service instead of the service that matches constraints.
Ignoring stakeholder requirements in favor of a purely technical answer.
Solving reliability with only backups.
Designing without operational ownership, monitoring, and deployment strategy.

Practice strategy

For each scenario, identify the non-negotiable constraint first: security, availability, latency, compliance, migration risk, cost, or operations. Then eliminate answers that satisfy the technology but miss the constraint.

Revised on Monday, May 25, 2026