Hard1 markMultiple Choice
Subtask 1.2: Technical RequirementsDatabaseCloud SpannerData Residency
This question is part of a case study — click to read the full scenario(Case 01)

CASE STUDY: TechStream Gaming

Company Overview: TechStream Gaming is a global gaming company with 500 employees and $50M annual revenue.
Current Environment: On-premises data centers in US and EU. 200 servers. MySQL databases (5 TB). Peak users: 2M. Cost: $100K/mo.
Business Requirements: Reduce costs by 40%. Support 5x user growth. Launch in APAC, SA, Africa. Improve deployment to daily.
Executive Statements: CEO: 'Scale rapidly.' CFO: 'Max $100K/mo, ROI 18mo.' CTO: 'Limited cloud exp, 99.95% uptime.'
Technical Requirements: <100ms latency globally. Real-time analytics. 5x traffic spikes. EU data residency. DDoS protection. CI/CD.
Constraints: 12-month migration. Max 4-hour downtime. 20 devs (Java/MySQL), 5 ops (limited cloud). Budget $2M.

QUESTION:
Which migration strategy and compute architecture should you recommend for the game servers to meet the business and technical requirements while addressing the CTO's constraints?

GCP PCA · Question 03 · Technical Requirements

CASE STUDY: TechStream Gaming

Company Overview: TechStream Gaming is a global gaming company with 500 employees and $50M annual revenue.
Current Environment: On-premises data centers in US and EU. 200 servers. MySQL databases (5 TB). Peak users: 2M. Cost: $100K/mo.
Business Requirements: Reduce costs by 40%. Support 5x user growth. Launch in APAC, SA, Africa. Improve deployment to daily.
Executive Statements: CEO: 'Scale rapidly.' CFO: 'Max $100K/mo, ROI 18mo.' CTO: 'Limited cloud exp, 99.95% uptime.'
Technical Requirements: <100ms latency globally. Real-time analytics. 5x traffic spikes. EU data residency. DDoS protection. CI/CD.
Constraints: 12-month migration. Max 4-hour downtime. 20 devs (Java/MySQL), 5 ops (limited cloud). Budget $2M.

QUESTION:
Which database solution should you recommend to replace the 5 TB MySQL databases, considering the need for global expansion, strong consistency for game state, and EU data residency?

Answer options:

A.

Migrate to Cloud SQL for MySQL using a high availability configuration in a single US region.

B.

Migrate to Cloud Bigtable with clusters in US, EU, APAC, SA, and Africa.

C.

Migrate to Cloud Spanner with a multi-region configuration, ensuring EU nodes are restricted to EU regions.

D.

Keep the database on-premises and connect via Cloud Interconnect to maintain data residency.

How to approach this question

Look for a database that supports relational data (migrating from MySQL), global scale (5x growth, new regions), and strong consistency.

Full Answer

C.Migrate to Cloud Spanner with a multi-region configuration, ensuring EU nodes are restricted to EU regions.✓ Correct
Migrate to Cloud Spanner with a multi-region configuration, ensuring EU nodes are restricted to EU regions.
Cloud Spanner is Google's fully managed, horizontally scalable, relational database service. It provides strong global consistency, which is critical for game state, while scaling to handle 5x growth across multiple regions. It supports specific regional configurations to satisfy data residency requirements.

Common mistakes

Choosing Cloud SQL (won't scale horizontally for writes globally) or Bigtable (not relational, lacks ACID transactions for complex game state).

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