Creating a migration plan (i.e., documents and architectural diagrams)

Integrating solutions with existing systems

When you move systems to the cloud, you must connect them to the tools and data you already have. This means planning how the new cloud applications will talk to the old on-premises systems, like a company's main database or user directory. You need to set up secure connections, like Cloud VPN or Cloud Interconnect, so that traffic can flow safely between your company's data center and Google Cloud. You also need to make sure the new system can use the same user logins and permissions, which often involves connecting to an existing Active Directory service.

Assessing and migrating systems and data to support the solution (e.g., Google Cloud Migration Center)

Before moving anything, you must understand what you have. Tools like Google Cloud Migration Center help you discover and assess your current servers and applications. This process involves taking an inventory of your systems, figuring out which ones are good candidates for the cloud, and estimating the cost and effort. For data migration, you must plan how to move databases and files with minimal downtime. Services like Database Migration Service or Transfer Appliance help move large amounts of data. The key is to choose the right tool based on the size of the data, the allowed downtime, and whether the migration happens online or offline.

Using migration methodologies, workload testing, network planning, and dependency planning

A good migration follows a structured method, like lift-and-shift (rehosting) or refactoring (redesigning for the cloud). You must test each workload in the cloud environment before fully committing to ensure it performs correctly. Network planning is critical: you must design your cloud network (VPC) to match your on-premises setup, plan IP address ranges, and configure firewalls so that services can talk to each other. Dependency planning means mapping out which applications rely on others; you must migrate connected systems together or in a specific order so that nothing breaks because a required service is missing.

Determining software license implications and financial impact

Moving to the cloud can change how you pay for software licenses. Some licenses are tied to physical servers and may not transfer to virtual machines in the cloud. You need to check with software vendors to understand the rules and costs, which might involve buying new licenses or using Google Cloud's own license offerings. The financial impact also includes analyzing the total cost of ownership (TCO), comparing your current on-premises expenses to the projected cloud costs. This helps you build a business case for the migration by showing the potential savings or the value of new capabilities.