Google Cloud Migration Journey

. Work closely with Customer,Business stakeholer to understand the business objective and buisness outcome.

Business Goals

Business Objectives

Technocal Goals

.Understand the context and environment

Decommision some workload

Consolidate Application Portfolio

VM move to Cloud

Modernize the workload

.Build a Catalog of

Applications

Workloads

Dependency

Application Stack

Infrastructure requirements

-VM

-Container

-Database

-Server

-Messaging server

Networking requirements

Firewall Rules

Security Requirements

Once it is categorized and build out this list, we can start building migration strategy moving forward.

. Identify any contraint that can not be moved ot cloud

---licensing cost

---3rd party framework/library

---tech stack not virtulizable

For ex: Mainframe can not be moved to Cloud

In such scenario, it may not be technically feasible to move to cloud, we can keep it as it is in the current env.

· Identify starting point in cloud journey

o Current state

On premise

Private cloud

Any other cloud

Hybrid cloud

o Target state

· Workload Type

o Legacy workload

– expensive to migrate.

- Here we can apply Rip & Replace migration type

o Cloud Native workload

· Migration Type

o Lift & Shift

Migrate as it is from current env to cloud

Little or no modification

Taking least advantage of cloud

Easier to migrate

o Improve & Move

Refactoring

Modernize the workload

Take advantage of cloud offering

o Rip & Replace

Greenfield- Develop app from scratch

Maximum benefit of cloud offering

Take long time to migrate since it is greenfield

· Asses Cloud Readiness

o It depends on following themes

Learn- Learning Programme

Lead - Leadership Support

Scale – Capacity to scale

Secure – capacity to secure the workload

o It depends on following Phases across those themes

Tactical Phase

Strategic

Transformational

· Migration Path

o Assess

Understand the current environment

Workload assessment

Identify inventory

Identify dependency and any other requirement

Risk identification and mitigation plan

Perform TCO calculation

Budget/funding

Establish app performance benchmark- KPI that need to be tracked

o Plan

Basic Infrastructure Cloud plan

Detail plan – how will you move to target state

Develop prioritized migration strategy

For example: Planning may include

1. Creating Organization

Setting up the organization account

Setting up users or migrating users from Active Directory to GCP

Setting up IAM policy as per the RBAC

Access control to environment/project/resources as per IAM requirements

2. Setting up Network Design –

Check with client for the network requirements

CIDR ranges to be used

Create VPC, subnets, firewall rules,

Network connectivity like VPN ,Dedicated/Partner Interconnect

VPC Peering,Shared VPC

3. Creating folders

Creating environments

Development

QA

Staging

Production

4. Creating project

5. Creating Resources for each project

Depending on the project requirements or based on the requirement , approved private service catalog containing project resources to be used

Terraform scripting for Infrastructure as a code

o Deploy

Design->Implement->Execute deployment processes to move workload to GCP

o Optimize

Use benefits of cloud native capabilities for GCP

Monitor application performance with GCP operation suite

Based on capacity planning, identify parameters and thresholds where you can configure autoscaling policy to scale out /scale in based on load, perform health check regularly

Configure notification/alert policy

Disaster Recovery

Costing

Training

Application Integration with AI capability for the app behaviour or prediction and fine tune it.

· End - We are now in Google Cloud.