Subtask 1.4: Migration Plan

**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?

**CASE STUDY: Dress4Win** **Company Overview:** Dress4Win is a web-based retail company that helps users organize their wardrobes. **Current Environment:** Colocated data center. Tomcat app servers, Nginx web servers, MySQL databases, Redis caching. 100TB of image data on SAN. **Business Requirements:** Migrate to cloud to handle seasonal spikes (Black Friday). Reduce CapEx. Enable rapid prototyping. **Executive Statements:** CEO: 'Innovate faster, stop worrying about servers.' CFO: 'Move to OpEx. Ensure PCI-DSS compliance.' CTO: 'Modernize stack but migrate quickly first.' **Technical Requirements:** Secure hybrid connectivity during migration. PCI-DSS compliance. Automated scaling. CI/CD for microservices. **Constraints:** Migration must be completed before Q4 holiday season (6 months). Limited budget for refactoring during initial migration. **QUESTION:** Given the CTO's statement and the 6-month constraint, which migration strategy should you recommend for the initial phase?

You need to migrate 50 TB of data from an on-premises NAS to Cloud Storage. Your corporate internet connection has 100 Mbps of available bandwidth. The migration must be completed within 2 weeks. Which migration tool should you use?

CASE STUDY: TechStream Gaming Overview: Gaming company, 500 employees, $100M revenue. 200 on-prem servers (US/EU), MySQL 5TB. 2M peak users. $150K/mo cost. Business Req: Reduce cost 40%, 5x growth, 3 new regions, daily deployments. Execs: CEO wants scale; CFO caps budget at $100K/mo; CTO needs 99.95% uptime, notes team has limited cloud skills. Tech Req: <100ms global latency, real-time analytics, 5x seasonal spikes, EU data residency, DDoS protection. Constraints: 12-month migration, max 4-hour downtime. QUESTION: Which migration strategy should you recommend for the legacy gaming application to meet the 12-month timeline and team skill constraints?

You are planning a massive data center migration to GCP involving 500 applications. You need to determine which applications to migrate first. What is the best practice for planning migration waves?

CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Environment: - On-prem US/EU - 200 servers - MySQL (5 TB) - 2M peak users - $100K/mo cost Requirements: - Reduce costs 40% - 5x growth - Launch APAC/SA/Africa - Daily deployments Exec Statements: - CEO: Scale rapidly. - CFO: Max $100K/mo, 18mo ROI. - CTO: Limited cloud exp, 99.95% uptime. Tech Reqs: - <100ms latency globally - Real-time analytics - 5x seasonal spikes - EU data residency - DDoS protection - CI/CD Constraints: - 12mo migration - <4hr downtime - 20 Java/MySQL devs, 5 ops - $2M budget QUESTION: Based on the constraints and requirements, which migration strategy should you recommend for the core gaming application?

CASE STUDY: ShopGlobal Company Overview: ShopGlobal is an international e-commerce retailer. They are preparing for their largest annual sales event (Black Friday) and want to migrate off their aging on-premises infrastructure. Current Technical Environment: - 3 on-premises data centers (US-East, US-West, EU-Central). - VMware vSphere environment with 500 VMs. - Monolithic Java application running on Tomcat. - Oracle RAC database for transactions. - 50 TB of product images on SAN storage. Business Requirements: - Ensure 100% availability during the upcoming holiday season. - Modernize the application architecture over the next 3 years. - Reduce capital expenditure (CapEx) by shifting to an OpEx model. Executive Statements: - CEO: "Downtime during Black Friday costs us $1M per hour. We need bulletproof reliability." - CFO: "We want to stop buying hardware. Move everything to a pay-as-you-go model." - CTO: "We want to eventually move to microservices, but we don't have time to rewrite the app before the holidays." Technical Requirements: - Migrate the existing VMs to the cloud with minimal changes initially. - Implement a global CDN for product images to reduce latency. - Set up disaster recovery with an RPO of 15 minutes and RTO of 1 hour. - Ensure PCI-DSS compliance for payment processing. Constraints: - The migration must be completed in 4 months (before the code freeze). - The Oracle database license cannot be easily transferred to the cloud. - The team has no experience with Kubernetes or containers yet. QUESTION: Given the 4-month timeline and the CTO's constraints, which migration strategy should you recommend for the VMware environment?