February 10, 2023

Top 20 AWS Migration Hub Interview Questions and Answers

  

In order to assess, plan, and track migrations to AWS, server and application inventory data may be gathered in one place via the AWS Migration Hub. Additionally, Migration Hub can speed up the migration of modernised applications.

 

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Ques. 1): What are the benefits of using AWS Migration Hub?

Answer:

The one-stop shop for cloud migration and modernisation, AWS Migration Hub provides you with all the resources you need to hasten and streamline your AWS experience. Making the case for cloud within your company, planning, carrying out, and monitoring a portfolio of application migrations to AWS, or modernising apps already operating on AWS are all things that Migration Hub can assist with.

 

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Ques. 2): What is actually AWS Migration Hub?

Answer:

You may get the tools you need using AWS Migration Hub to gather and catalogue your current IT assets based on real usage, examine application components and infrastructure dependencies, and organise resources into apps. For business case and migration planning, you may produce suggestions for migration strategies and Amazon Elastic Compute Cloud (EC2) instances. You can also monitor the progress of application migrations to AWS and update applications that are currently operating on the platform.

 

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Ques. 3): How may AWS Migration Hub aid in my comprehension of my IT environment?

Answer:

AWS Migration Hub enables you to explore data gathered by AWS discovery tools and kept in the repository of the AWS Application Discovery Service, which aids in your understanding of your IT environment. You can access technical details and performance data about the found resources in Migration Hub once the repository has been loaded. You can evaluate and import server groups as a "application" after exporting data from the Application Discovery Service repository. Once aggregated, the migration status from each migration tool used to move the application's servers and databases is combined using the application grouping.


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Ques. 4): Using AWS Migration Hub, which Regions am I able to migrate to?

Answer:

If your migration tools are accessible in that Region, AWS Migration Hub can help you monitor the progress of your migrations across all AWS Regions. The migration status is sent to your chosen Migration Hub home Region by the migration tools that connect with Migration Hub, such as AWS Application Migration Service and AWS Database Migration Service. Your discovery and migration tracking data are stored in the home Region, which is specified before you use the service for the first time. The home Region can see the aggregated migration status from all destination Regions. You should be aware that integrated tools won't communicate status until you've authorised (connected) them on the Tools tab of the Migration Hub interface.


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Ques. 5): How may AWS Migration Hub aid in my comprehension of my IT environment?

Answer:

AWS Migration Hub enables you to examine data gathered by AWS discovery tools and kept in the AWS Application Discovery Service repository, which aids in your understanding of your IT environment. Once the repository has been filled, you may use Migration Hub to access technical details and performance data about the resources that have been found, analyse it, see and tag server and application dependencies, and organise servers into apps. Additionally, you can import groupings and export data as a "application." Once aggregated, the migration status from each migration tool used to move the application's servers and databases is combined using the application grouping.


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Ques. 6): What is an application view?

Answer:

The list of applications and their current migration status can be found on the Applications page in the Migrate section of the AWS Migration Hub console. On the Apps page, only resources that have been assigned to applications using the Servers page of the Discover section or the AWS SDK/CLI will be shown. Migration statuses for applications can be "not started," "in process," or "Completed."

 

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Ques. 7): Not all of the fields in the import template have data in them. Can I import my info now?

Answer:

Yes. Even if not all of the fields in the import template have data filled in, you can still import data. If you enter your own unique key ("ExternalId") for each row, import will utilise it to categorically identify and import the entries. The values entered for "IPAddress," "HostName," "MACAddress," or a combination of "VMware.MoRefId" and "VMware.vCenterId" will be used by import to determine the uniqueness of a specific server for each row if you don't supply the matching key. No rows will be imported if any of the aforementioned fields, or the matching key ("ExternalId"), are missing a value.


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Ques. 8): Are suggestions for Burstable Performance Instances provided by the EC2 instance recommendations feature?

Answer:

Yes. Burstable Performance Instances are recommended by the EC2 instance recommendations function. In order to more properly compare the anticipated price with other instance families, it computes an expected number of spent CPU credits and associated cost using "average" and "peak" CPU data points.


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Ques. 9): What happens if I don't do an accurate resource transfer from on-premises to AWS using a rigorous re-host migration?

Answer:

If the resource is grouped in an application, AWS Migration Hub will display the progress of resource migrations carried out with supported tools. It is not necessary to migrate to a new host strictly. If the server responsible for the database migration is grouped in an application, for example, you will see updates in Migration Hub when moving a database's contents using AWS Database Migration Service.

 

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Ques. 10): What modernization and migration possibilities are supported by the strategy recommendations?

Answer:

For applications running on Windows Server 2003 or later or a wide range of Linux distributions, including Ubuntu, RedHat, Oracle Linux, Debian, and Fedora, Strategy Recommendations supports analysis for potential rehost (EC2) and replatform (managed environments such as RDS and Elastic BeanStalk, Containers, and OS upgrades) options. Additional refactor analysis is provided by Strategy Recommendations for licenced databases, C#, and Java custom applications (such as Microsoft SQL Server and Oracle).

 

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Ques. 11): Why should I use Refactor Spaces?

Answer:

Setting up an infrastructure for application remodelling and managing evolving applications at scale are two major practical issues when altering applications, which Refactor Spaces addresses. Refactor Spaces enables alternative approaches for design and technology, team alignment, and process across the pieces while assisting you in combining existing apps and microservices into a unified solution. You can extend legacy apps with microservices that function on any AWS compute target by using Refactor Spaces (such as EC2, Amazon Elastic Container Service, Amazon Elastic Kubernetes Service, AWS Fargate, and AWS Lambda). By setting up a foundation for application refactoring in a matter of minutes, Refactor Spaces offers significant time savings.

 

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Ques. 12): Is it possible to use my VPC to secretly access AWS Migration Hub Refactor Spaces APIs without exposing my public IP address?

Answer:

Yes, by setting up VPC Endpoints in your VPC (made using Amazon Virtual Private Cloud), you can discreetly use Refactor Spaces APIs. VPC Endpoints eliminate the requirement for an internet gateway, NAT gateway, or virtual private network (VPN) connection by allowing the routing between the VPC and Refactor Spaces to be handled by the AWS network. AWS PrivateLink, a technology that enables private connectivity between AWS services utilising Elastic Network Interfaces (ENIs) with private IP addresses in your VPCs, powers the most recent iteration of VPC Endpoints utilised by Refactor Spaces.

 

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Ques. 13): What advantages does using AWS Migration Orchestrator offer?

Answer:

You may speed up migrations, make the migration procedure simpler, and modify the migration tools and procedure to fit your use cases with the aid of Orchestrator.

Increase migration speed: Utilizing tried-and-true predefined workflow templates based on thousands of apps with comparable patterns that AWS has migrated, you may speed up the transfer of your applications.

Automate to simplify: To reduce manual work, automate pre-migration procedures, migration workflows, and migration tasks using a variety of technologies, including the AWS Application Discovery Service, AWS Application Migration Service, and AWS Launch Wizard.

Adapt and streamline: Reuse workflow templates by altering the stages and dependencies on top of the baseline guidelines to meet the demands of different workloads and use cases.

 

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Ques. 14): What does an Orchestrator process template represent?

Answer:

A process template is a playbook that includes a recommended list of migration tasks, dependencies, appropriate migration tools, and automation opportunities. The predefined workflow template, for instance, contains step-by-step tasks for automated validation of connectivity between source servers and plugins, the ability to provision a new SAP environment using AWS Launch Wizard, automated validation of source and target environments, automated migration of the HANA database and applications, and post-migration validation.

 

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Ques. 15): How can I track the development of my application migrations using AWS Migration Hub?

Answer:

You are helped by AWS Move Hub's visibility into the status of your migration. After using one of the built-in migration tools, you go back to the hub to check on the progress of your migration. Once the migration has begun, you can arrange servers into apps, or you can find and group your servers beforehand.

 

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Ques. 16): What is the home region of the Migration Hub?

Answer:

You must choose a Migration Hub home Region through the Migration Hub Settings page or by using the Migration Hub Config API before using the majority of Migration Hub's functionalities (excluding Refactor Spaces).

The information kept in the Migration Hub's home region serves as a single repository for your whole portfolio's discovery and migration planning data as well as a single view of migrations into other AWS Regions. You can migrate to any Region that is supported by your migration tools, and the migration status will be visible in the home Region you have chosen for the Migration Hub. For additional information about the home region of the Migration Hub, consult the paperwork.

 

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Ques. 17): What predefined workflow templates is Orchestrator offering?

Answer:

There are four predefined workflow templates supported by Orchestrator right now. Utilizing the AWS Launch Wizard and HANA System Replication, the first template aids with the migration of SAP NetWeaver-based applications with HANA databases. The second template facilitates quick application rehosting utilising AWS Application Migration Service (MGN). The third and fourth templates enable you to migrate your SQL Server databases to Amazon RDS and to Amazon EC2 utilising native backup and restore, respectively. All of these templates provide the possibility to add new stages and automation scripts as well as predefined automation of tasks.

 

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Ques. 18): In AWS Migration Hub, how do I examine my IT portfolio?

Answer:

You must first execute discovery using an AWS discovery tool or migrate with an integrated migration tool before you can examine your IT assets in AWS Migration Hub. Following that, you can explore your surroundings inside Migration Hub. By clicking on the server ID displayed on the Servers page of the Migration Hub dashboard, you may get further information about any resource you find. The server details page appears next. You will view gathered information, such as technical details and average utilisation, if you utilised an AWS discovery tool to find your servers.

 

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Ques. 19): What does the feature that recommends EC2 instances do?

Answer:

AWS Migration Hub's EC2 instance suggestions tool examines the information gathered from each on-premises server, such as server specifications, CPU and memory usage, to suggest the least priced EC2 instance necessary to perform the on-premises workload. By indicating preferences for an AWS purchase option, an AWS region, EC2 instance type exclusions, and a CPU/RAM utilisation statistic, you can further fine-tune recommendations (average, peak, or percentile).

 

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Ques. 20): What happens if I have discovery information for a single server in AWS Migration Hub from various sources? What data source is used to determine the recommended EC2 instance for that server?

Answer:

The EC2 instance suggestions functionality will use the most recent and full data to present an instance recommendation if discovery data is available from several sources for the same server. A recommendation will be produced, for instance, if you upload the CPU/RAM specifications for a specific server utilising Migration Hub import. The server specification information will also be recorded by the ADS agent if you subsequently install the AWS Application Discovery Service (ADS) Discovery Agent on this server. The ADS agent-collected requirements will be used to construct the suggestion the next time you ask for EC2 instance recommendations for that server because the agent's data is more up-to-date and comprehensive.

 

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