Lecture on Migration

Introduction to Migration

Migration involves moving an organization's resources from on-premises to the cloud.
It involves moving databases and workloads securely.
Migration can occur between different cloud providers or within the same provider (e.g., from one AWS region or VPC to another).
It's a singular journey with multiple phases, known as waves in AWS terminology.

Companies existing before the cloud need to move their applications to the cloud.
Migration is essential for current resource management and organizational growth.
Understanding migration phases helps identify where a project stands and what's next.

Critical for understanding a project’s challenges and aligning stakeholders.
Involves evaluating the customer and gathering clear requirements.
Misalignment in discovery can lead to project setbacks.
Includes understanding functional (specific technical needs) and non-functional requirements (e.g., cost reduction, compliance).

Evaluate the readiness for migration.
Involves evaluating:
- People: Assessing skills and readiness of employees, need for training or certifications.
- Operations: Establishing team responsibilities for cloud operations.
- Platform: Analyzing current and future platform needs, access control, and resource provisioning methods.
- Process: Evaluating current processes and their alignment with AWS.
- Security: Ensuring a strong understanding of security needs.
Tools like the Migration Readiness Assessment Tool (MRA) and the Cloud Adoption Readiness Tool (CART) are used.

Creating a migration plan and addressing gaps from the Assess Phase.
Discover and Analyze: Using tools like AWS's Application Discovery Service to gather data on current resources.
Design and Plan: Developing high-level design (HLD) and low-level design (LLD) documents for future state architecture.

Migrate and Validate: Using predetermined tools to execute migration and validate success.
Optimize: Post-migration phase focused on improving and modernizing the cloud environment.

AWS provides various tools for migration, such as the Application Migration Service and Database Migration Service.
Ensuring the right migration strategy (lift and shift, lift and tinker, etc.) is crucial.
Continuous documentation and stakeholder communication is vital throughout the migration process.

Lack of proper discovery can lead to unmet expectations and project failures.
Aligning all stakeholders, from technical teams to budget controllers, is crucial.
Understanding both functional and non-functional requirements ensures all needs are met.

Migration is a complex but essential process for modern businesses.
Thorough planning, stakeholder alignment, and correct tool usage are key to successful migration.