What are the Strategies and Tools to Perform Large-Scale Migrations: Part I
Tags: aws, migration, cloudnative, productivity
Published: 2022-02-14 04:20:11

## DAY 8 - Strategies and Tools to Perform Large-Scale Migrations: Part I
☁️[100 days of Cloud- **Day Eight**](https://github.com/anuvindhs/100daysofcloud)
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## What is a cloud migration?
Moving application, data,  and your IT infrastructure resources  to a cloud computing environment. 

### Drivers to migrating to cloud
- scenarios like  re architecting your current apps to ☁️ cloud native.
-  Going serverless on ☁️ cloud.
- Increase in business agility 🕴️ , improve productivity by 30% to 70% .
- Competitive advantage.
- Less physical infrastructure management, everything will be in cloud ☁️.

### Some barriers you can expect during your cloud adoption
- Existing investment 💰.
- Upfront expenses .
- Skeptical Skate holders🤝.
- Application interdependencies ↪️.
- Concerns of down time during migration ⬇️.
- lack of cloud expertise ⛈️.

### How can you Make your Cloud Migration Journey Successful
</br>
#### Executive Sponsorship🤵
Provides clarity on business propose, align clarity on business and technical requirement.

#### Cloud First Strategy ☁️
Create a **Vision**, Motivate and encourage team Members to follow the Vision. Support them in each stage when they need you.

#### Organizational Change🏢
Define operating model , implement cloud native policies process and opportunities for training.

#### RoadMap 🛣️

Define your  roadmap , Start small and iterate , measure , manage and update the plan

#### Cloud Center of excellence 👔
Provide centralized expertise and guide for innovation & to understand cloud migration.

#### Principles and standards 🧭
Guide team to understand principals and standards in cloud migration

#### Experiment🧪
Ability to experiment and recommendation on architecture will also help in  successful migration.

### Common Migration Strategies 

#### Rehost or Lift and Shift🏋️.
AWS System manager ca help to do this automatically. Application can be re-Architecting will be easier once the infrastructure is in cloud.

#### Re-platform or Lift and Reshape⛅.
Adopting managed platforms. Also understand the app and migrate to the right service like containers or serverless solutions.

#### Repurchase 💳.
Changing current product license to get a cloud native product.

#### Refactor and Re-Architect 🎛️
Good for business goals like more feature and functions. Most expensive solution , if SOA (service oriented architecture) is required by business this is the right choice.

#### Retire or Retain 📝.

Identify the resources that can be retired and focus on running and innovate more with cloud.
Retain required infrastructure. 


## Understanding the adoption Stages **🚸**

![Image STAGES](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/y6mgcb2vnmvq06erfqkt.png)
- **Project** ,get familiar with cloud and understand the benefits of cloud.
- **Foundation** , build the foundation by creating a landing zone. An multi account aws environment (AWS Organizations, Control tower is your goto for AWS).
- **Migration** , this phase you migrate mission critical apps or ICT infrastructure to Cloud.
- **Reinvention** ,  focus on reinvention by taking the advantages of cloud computing.


## MRA & CAF

### MRA - migration readiness assessment 

Conducted by AWS or partners to understand how ready you are to adopt the cloud technology. It will also help you to understand your capabilities.

### CAF - Cloud Adoption framework

AWS CAF identifies specific organizational capabilities that underpin successful cloud transformations.AWS CAF groups its capabilities in six perspectives: **Business, People, Governance, Platform, Security, and Operations**


### Why should we do Migration readiness assessment ?

- Helps to understand potential **pot holes** and **road blocks** on your migration.
- Scoping the **Migration readiness** plan, understanding what need to be migrated and what not to be.

### How to do an MRA (Migration Readiness Assessment)?
Conducted by AWS with AWS partner 
- identify if you are qualified for MAP.  
- schedule meeting & require attendance of stake holders.
- Use MRA as Guide.
- Analysis MRA results and Build Observations.
- Schedule and conduct out-brief with customer.

to be continued on **[What are the Strategies and Tools to Perform Large-Scale Migrations: Part II](https://dev.to/aws-builders/what-are-the-strategies-and-tools-to-perform-large-scale-migrations-part-ii-18db)** .........

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