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Abdul, Solution Architect

Last Updated: 4 Jul 2023

• 15 years of proven experience in IT industry • 7 years experience as Solution Architect, 3 years of which in a position of Senior Architect • 12 years of experience in Java, Spring Boot, Micro Services and AWS, Google, Azure Cloud for deployment. • Worked with Ant and Maven and Gradle Build tools in Java. • Experience in designing, developing and overseeing the implementation of solutions that improve the stability, scalability, availability and latency • Expertise in steaming tools such as Kafka • Experience in MySQL, Cassandra, PostgreSQL • Automated environments setup for Developers, Staging for SQA and Production for customers • Extensive experience with Continuous Integration Tools like Jenkin, Hudson, circleci, TeamCity, Bamboo, GitLab and configuring CI/CD with unit test on builds • Experience with AWS API gateway, Lambda functions, Elastic Load Balancers, VPC, Security groups, Jump Servers, Route53, Cloud Watch and servers Auto Scaling • Worked with different Bug Tracking Tools like Remedy, Jira, ServiceNow and Clear Quest. • Ability in development and execution of XML, Shell Scripts and Perl Scripts. • Experience in cloud cost optimization, resources cleanup, automated services scaling based on load and ensuring latest security standards • Experience in linux/Unix Systems • Worked on SDLC Methodologies like Agile, Waterfall.

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Konstantin, Senior Full-Stack Engineer

Last Updated: 4 Jul 2023

- I have experience cooperating with clients from all over the world and building products related to various spheres: e-commerce, real estate, custom CRM, trading, social media and many more. Product tech design and full cycle of development and support. - Key skills - Product tech design and full cycle of development and support - Technical analysis, time & budget management - knowledge of Go, Rust and JavaScript/TypeScript (node.js/react.js) - knowledge of Database systems: RDBMS, noSQL - knowledge of code quality tools and systems, continuous integration and delivery - knowledge of AWS services - knowledge of QA processes, integration and e2e testing. - Upper- Intermediate English

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Oleksii I., Full-stack Node.js Engineer

Poltava, Ukraine
Last Updated: 4 Jul 2023
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- Software Engineer with 5+ years of commercial experience in the IT industry using front-end and back-end technologies - Experience in working on cryptocurrency projects - Good knowledge of OOP - Experience in using Design patterns - Upper-Intermediate English - Available ASAP

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Max R., Senior .NET Engineer

Kharkiv, Ukraine
Last Updated: 4 Jul 2023

- 5+ years of commercial experience with C# and .NET - Experience with .NET Core and .NET Framework - Experience with MS SQL Server, MongoDB, Cosmos DB - RabbitMQ, Redis - Worked with Stripe, AWS (SNS, SQS, S3, EFS, Lambda, EC2), Azure(Storage, Queues), Hangfire - Knowledge of OOP and SOLID principles - Basics of HTML, CSS, Javascript, JQuery - Familiar with Docker and Kubernetes; - Intermediate English - Available ASAP

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Hemant, Solution Architect

Last Updated: 4 Jul 2023

- 15+ years of experience in software development - Managed over 15-20 employees on a daily basis - Good Knowledge of Enterprise Design Patterns - Good Knowledge of the Hyperledger fabric BlockChain framework - Good Knowledge of the health care Domain and Banking Domains. - Technical expertise in Python Django, MEAN Stack, Blockchain, J2SE, J2EE, SQL, NoSQL, Spring, and Hibernate. - Excellent Exposure to AWS Clouds like EBS, RDS, ELB, etc. - Excellent Exposure to GCP like Cloud Storage, App Engine, etc. - Good Knowledge of various repository Tools like GIT, SVN, etc. - Excellent exposure to Analysis, Design, and Development phases of projects - Excellent Exposure to Unit and Integration Testing. - Excellent development skills adhering to Coding standards. - Good communication skills within the organization as well as with the Client. - Good Knowledge of various JAVA IDE like2 Eclipse, NET Beans, etc. - Knowledge of SQL Scripts and Stored Procedures. - Excellent Exposure to building tools like ant, MVN, Bamboo, etc. - Good Knowledge of application servers like JBoss.

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Table of Contents

TOP 10 AWS ELB (Amazon Elastic Load Balancer) Related Technologies

  • Python

    Python is a versatile and widely-used programming language that is highly popular for AWS ELB software development. It offers a simple syntax and a vast number of libraries, making it easy to build scalable and robust applications for ELB.

  • Java

    Java is another popular choice for AWS ELB software development. It is a mature and powerful language with a large ecosystem of libraries and frameworks. Java’s strong typing and object-oriented nature make it well-suited for building complex ELB applications.

  • Node.js

    Node.js is a JavaScript runtime built on Chrome’s V8 engine. It is particularly well-suited for building event-driven, scalable, and high-performance applications for AWS ELB. Node.js allows developers to write server-side code in JavaScript, providing a unified language and a vast ecosystem of modules.

  • Amazon EC2

    Amazon EC2 (Elastic Compute Cloud) is a web service that provides resizable compute capacity in the cloud. It is commonly used in conjunction with AWS ELB to create scalable and reliable applications. With EC2, developers can easily provision and manage virtual servers to handle the load balancing requirements of ELB.

  • Docker

    Docker is an open-source platform that allows developers to automate the deployment of applications inside software containers. It is widely used in AWS ELB software development as it provides a lightweight and isolated environment for running applications, making it easier to manage and scale the ELB infrastructure.

  • Amazon RDS

    Amazon RDS (Relational Database Service) is a fully managed database service provided by AWS. It is commonly used in conjunction with ELB to store and retrieve application data. With RDS, developers can easily set up, operate, and scale a relational database in the cloud.

  • Terraform

    Terraform is an infrastructure as code tool that allows developers to define and provision infrastructure resources in a declarative manner. It is often used with ELB to automate the creation and management of load balancers and related resources. Terraform simplifies the process of provisioning and scaling ELB infrastructure.

TOP 14 Facts about AWS ELB (Amazon Elastic Load Balancer)

  • AWS Elastic Load Balancer (ELB) is a fully managed load balancing service provided by Amazon Web Services.
  • ELB automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, IP addresses, and Lambda functions.
  • ELB helps improve the availability and fault tolerance of applications by distributing traffic across multiple targets and automatically balancing the load.
  • There are three types of ELB: Classic Load Balancer (CLB), Application Load Balancer (ALB), and Network Load Balancer (NLB).
  • CLB is the original load balancer provided by AWS and is suitable for simple use cases.
  • ALB operates at the application layer and provides advanced routing and content-based routing capabilities.
  • NLB is designed to handle high volumes of traffic and is suitable for extreme performance requirements.
  • ELB supports various protocols, including HTTP, HTTPS, TCP, and UDP.
  • ELB can automatically scale its capacity to handle changes in traffic patterns and maintain performance.
  • ELB integrates with other AWS services, such as Auto Scaling, AWS Certificate Manager, and AWS Identity and Access Management (IAM).
  • ELB provides health checks to monitor the health of the registered targets and route traffic only to healthy targets.
  • ELB provides access logs that capture detailed information about each request processed by the load balancer.
  • ELB supports SSL/TLS termination, allowing it to offload the SSL/TLS encryption and decryption process from the backend instances.
  • ELB provides a range of security features, including integration with AWS WAF (Web Application Firewall) for protecting applications against common web exploits.

Hard skills of a AWS ELB (Amazon Elastic Load Balancer) Developer

As an AWS ELB (Amazon Elastic Load Balancer) Developer, your hard skills will play a crucial role in ensuring the smooth functioning of load balancing in cloud environments. Here is an overview of the hard skills required at different levels of expertise:


  • AWS Fundamentals: Understanding the basics of AWS services and architecture.
  • ELB Configuration: Ability to configure and manage Elastic Load Balancers.
  • Networking: Knowledge of TCP/IP, DNS, and other networking concepts.
  • Security: Familiarity with security best practices and implementation in ELB.
  • Monitoring and Troubleshooting: Proficiency in monitoring ELB performance and identifying and resolving common issues.


  • AWS Services Integration: Experience in integrating ELB with other AWS services like EC2, Auto Scaling, and Route 53.
  • Advanced Networking: Understanding of VPC, Subnets, and Network ACLs for advanced ELB configurations.
  • SSL/TLS Certificates: Knowledge of SSL/TLS certificate management and configuring secure connections on ELB.
  • Performance Optimization: Ability to fine-tune ELB settings for optimal performance and scalability.
  • Automation and Scripting: Proficiency in using AWS CLI, SDKs, or automation tools like AWS CloudFormation or Terraform.
  • High Availability: Understanding of configuring ELB for high availability and fault tolerance.
  • Disaster Recovery: Knowledge of implementing ELB for disaster recovery scenarios.


  • Advanced Load Balancing Concepts: In-depth understanding of load balancing algorithms, session persistence, and health checks.
  • Application Load Balancer: Experience in configuring and managing Application Load Balancers for complex application architectures.
  • Auto Scaling: Proficiency in integrating ELB with Auto Scaling groups for dynamic workload management.
  • Network Load Balancer: Knowledge of configuring and optimizing Network Load Balancers for high-performance workloads.
  • Infrastructure as Code: Experience in using infrastructure as code tools like AWS CloudFormation or Terraform for ELB deployments.
  • Containerization: Understanding of load balancing in containerized environments using services like Amazon ECS or EKS.
  • Performance Testing: Ability to conduct performance testing and analysis for ELB configurations.
  • Cost Optimization: Knowledge of cost optimization strategies for ELB usage.

Expert/Team Lead

  • Architecture Design: Ability to design highly available and scalable load balancing architectures.
  • Advanced Troubleshooting: Expertise in troubleshooting complex ELB issues and performance bottlenecks.
  • Security Best Practices: In-depth knowledge of implementing advanced security features and practices in ELB.
  • Capacity Planning: Proficiency in capacity planning and forecasting for ELB.
  • Optimization Strategies: Ability to develop optimization strategies for ELB configurations based on specific use cases.
  • Team Leadership: Strong leadership skills to guide and mentor junior team members in ELB development.
  • Vendor Management: Experience in managing relationships with AWS and other relevant vendors.
  • Continuous Integration and Delivery: Knowledge of integrating ELB into CI/CD pipelines for seamless deployments.
  • Performance Monitoring and Analysis: Expertise in monitoring ELB performance and conducting in-depth analysis.
  • DevOps Practices: Understanding of DevOps principles and experience in implementing ELB in DevOps environments.
  • Documentation and Communication: Excellent documentation and communication skills to effectively communicate ELB solutions and recommendations.

Pros & cons of AWS ELB (Amazon Elastic Load Balancer)

7 Pros of AWS ELB (Amazon Elastic Load Balancer)

  • High Availability: AWS ELB provides automatic distribution of incoming traffic across multiple EC2 instances, ensuring high availability and fault tolerance.
  • Elastic Scalability: ELB can easily scale up or down based on the traffic demands, allowing your application to handle sudden spikes in traffic without any downtime.
  • Health Monitoring: ELB continuously monitors the health of the registered instances and automatically routes traffic only to the healthy instances, improving the overall reliability of your application.
  • SSL Termination: ELB can terminate SSL connections, offloading the SSL decryption process from your instances and reducing the computational load on your servers.
  • Integrated Security: ELB supports various security features like SSL/TLS encryption, access control lists, and AWS Web Application Firewall (WAF), providing enhanced security for your applications.
  • Cost-Effective: With ELB, you only pay for the resources you use. It eliminates the need for investing in and managing your own load balancing infrastructure, reducing operational costs.
  • Ease of Use: ELB integrates seamlessly with other AWS services and provides a simple and intuitive interface for managing your load balancers, making it easy to set up and configure.

7 Cons of AWS ELB (Amazon Elastic Load Balancer)

  • Complex Configuration: Setting up ELB can be complex, especially for users who are new to AWS. The configuration options and settings can be overwhelming for beginners.
  • Limited Customization: ELB has certain limitations when it comes to customization. Advanced load balancing configurations may require additional services or manual configuration.
  • Limited Metrics: ELB provides basic metrics for monitoring, but if you need more detailed insights or customized metrics, you may need to use additional monitoring tools or services.
  • Scaling Challenges: While ELB offers elastic scalability, scaling can sometimes be slow or require manual intervention, leading to potential performance issues during sudden traffic surges.
  • Network Latency: ELB introduces an additional network hop, which can increase the overall network latency for your application. This can impact the response time for certain types of applications.
  • Vendor Lock-in: When using ELB, you are tied to the AWS ecosystem. Migrating to a different cloud provider or managing load balancing outside of AWS can be challenging and time-consuming.
  • Support Limitations: AWS ELB support is primarily provided through AWS support channels, and the response time and level of support may vary depending on your support plan.

What are top AWS ELB (Amazon Elastic Load Balancer) instruments and tools?

  • AWS Elastic Load Balancer (ELB): AWS ELB automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, and IP addresses, to ensure high availability and fault tolerance of your applications. It balances the load based on traffic patterns in the application and provides advanced features like SSL termination, session stickiness, and health checks. ELB has been widely used since its launch in 2009 and continues to be a crucial tool for managing application traffic in AWS.
  • Elastic Load Balancer Controller for Kubernetes: This tool, developed by AWS, allows you to manage and configure AWS ELBs within your Kubernetes clusters. It simplifies the process of creating and managing load balancers for your containerized applications running on Kubernetes. The Elastic Load Balancer Controller integrates seamlessly with Kubernetes Ingress resources, making it easier to expose your services externally and distribute traffic efficiently.
  • Application Load Balancer (ALB): Introduced by AWS in 2016, ALB is a powerful tool for load balancing HTTP and HTTPS traffic at the application layer (Layer 7). It supports advanced routing features, such as path-based routing, host-based routing, and redirect rules. ALB also provides content-based routing, allowing you to direct traffic to specific services based on the content of the request. With its rich feature set, ALB has become a popular choice for modern application architectures.
  • Network Load Balancer (NLB): NLB is a highly scalable and low-latency load balancer introduced by AWS in 2017. It operates at the transport layer (Layer 4) and is designed to handle extreme performance requirements. NLB can handle millions of requests per second while maintaining ultra-low latencies. It is commonly used for TCP and UDP traffic, making it suitable for high-performance workloads, such as gaming, real-time streaming, and IoT applications.
  • Classic Load Balancer (CLB): Although it is an older load balancer offered by AWS, the Classic Load Balancer still plays a significant role in certain scenarios. CLB provides basic load balancing capabilities for EC2 instances and operates at both Layer 4 and Layer 7. It supports HTTP, HTTPS, TCP, and SSL traffic. While it lacks some of the advanced features of ALB and NLB, CLB remains a viable option for simple load balancing requirements.
  • AWS Global Accelerator: This tool enhances the performance and availability of your applications by utilizing the AWS global network infrastructure. It improves the internet connectivity between your users and your application endpoints, reducing latency and increasing throughput. AWS Global Accelerator automatically routes traffic to the nearest AWS edge location, improving the user experience and reducing the load on your applications.
  • Third-Party Load Balancers: In addition to the native AWS load balancers, there are several third-party load balancers available in the AWS Marketplace. These load balancers offer additional features and customization options that cater to specific use cases. Some popular third-party load balancers include NGINX Plus, F5 BIG-IP, and Citrix ADC.

TOP 14 Tech facts and history of creation and versions about AWS ELB (Amazon Elastic Load Balancer) Development

  • AWS Elastic Load Balancer (ELB) was first introduced by Amazon Web Services in August 2009.
  • It was created to help distribute incoming application traffic across multiple Amazon EC2 instances, making it easier to scale and achieve high availability.
  • The ELB was designed using a methodology known as the “scale-out” approach, which focuses on adding more instances to handle increasing traffic rather than scaling up individual instances.
  • The initial version of ELB supported HTTP and HTTPS traffic, providing load balancing capabilities for web applications.
  • In 2011, Amazon introduced the second version of ELB, known as ELB V2 or Application Load Balancer (ALB). This version added support for advanced application-level features such as content-based routing and request-level authentication.
  • The third version of ELB, released in 2017, is called Network Load Balancer (NLB). NLB is designed for handling extremely high volumes of traffic and provides ultra-low latency for TCP and UDP traffic.
  • ELB has played a crucial role in making applications highly available and fault-tolerant by distributing traffic across multiple instances in different availability zones.
  • ELB supports automatic scaling, allowing it to dynamically adjust the number of instances based on traffic patterns, ensuring optimal performance and cost efficiency.
  • To enhance security, ELB offers SSL/TLS termination, allowing SSL/TLS encryption and decryption at the load balancer level, offloading this resource-intensive process from the backend instances.
  • ELB integrates seamlessly with other AWS services, such as Auto Scaling, Amazon EC2 Container Service, and AWS Certificate Manager, providing a comprehensive solution for deploying scalable and secure applications.
  • ELB offers health checks to monitor the health of the instances and automatically redirects traffic away from unhealthy instances.
  • With ELB, developers can easily manage their applications’ traffic routing and achieve blue-green deployment strategies, enabling seamless updates without downtime.
  • The ELB service has evolved over the years to support IPv6 traffic, WebSocket protocols, and other advanced features, catering to the ever-changing needs of modern applications.
  • ELB has become a critical component of many enterprise architectures, helping organizations achieve high availability, scalability, and resilience in their cloud-based applications.
  • Today, ELB continues to be a key offering in the Amazon Web Services portfolio, empowering businesses to deliver reliable and performant applications to their customers.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsAssisting senior developers in coding and testing tasks, learning new technologies and frameworks, troubleshooting basic issues, participating in code reviews and documentation.$50,000 – $70,000
Middle2-5 yearsDeveloping new features and modules, collaborating with team members on project planning and design, conducting code reviews, optimizing code performance and efficiency, providing technical guidance to junior developers.$70,000 – $90,000
Senior5-8 yearsLeading project development, designing complex solutions, mentoring and coaching junior and middle developers, collaborating with stakeholders, conducting system architecture reviews, ensuring code quality and performance.$90,000 – $120,000
Expert/Team Lead8+ yearsLeading a team of developers, managing projects and timelines, making strategic technical decisions, collaborating with cross-functional teams, conducting performance evaluations, providing guidance and mentorship to the team, driving innovation and best practices.$120,000+

Soft skills of a AWS ELB (Amazon Elastic Load Balancer) Developer

Soft skills are essential for an AWS ELB (Amazon Elastic Load Balancer) Developer to effectively manage and optimize the load balancing infrastructure. These skills help in collaborating with teams, communicating effectively, and providing excellent support to clients. Here are the soft skills required at different levels of expertise:


  • Problem-solving: Ability to identify and resolve basic issues related to load balancing configurations.
  • Communication: Clear and concise communication skills to effectively convey information to team members and clients.
  • Teamwork: Ability to work collaboratively with other developers and stakeholders to ensure smooth load balancing operations.
  • Adaptability: Willingness to learn and adapt to new technologies and industry trends in load balancing.
  • Time management: Efficiently managing time and prioritizing tasks to meet project deadlines.


  • Troubleshooting: Proficient in diagnosing and resolving complex load balancing issues efficiently.
  • Leadership: Ability to lead a small team of developers, providing guidance and mentorship.
  • Client management: Skilled in managing client expectations and maintaining strong client relationships.
  • Analytical thinking: Capable of analyzing load balancing metrics and making data-driven decisions for optimization.
  • Collaboration: Excellent collaboration skills to work effectively with cross-functional teams.
  • Project management: Experience in managing load balancing projects from initiation to completion.
  • Documentation: Strong documentation skills to maintain comprehensive records of load balancing configurations and changes.


  • Strategic thinking: Ability to develop long-term load balancing strategies aligned with business goals.
  • Mentorship: Providing guidance and mentorship to junior and middle-level developers.
  • Client negotiation: Skilled in negotiating contracts and agreements with clients for load balancing services.
  • Vendor management: Experience in managing relationships with load balancing vendors and optimizing vendor contracts.
  • Conflict resolution: Proficient in resolving conflicts and addressing challenges within the load balancing team.
  • Continuous improvement: Focused on continuously improving load balancing processes and methodologies.
  • Business acumen: Understanding the business impact of load balancing and making recommendations accordingly.
  • Presentation skills: Ability to present load balancing strategies and results to stakeholders.

Expert/Team Lead

  • Technical leadership: Demonstrating technical expertise and providing guidance to the load balancing team.
  • Project planning: Proficient in planning and executing large-scale load balancing projects.
  • Innovation: Driving innovation in load balancing techniques to optimize performance and efficiency.
  • Enterprise-level collaboration: Collaborating with multiple teams and departments across the organization.
  • Decision-making: Making critical decisions related to load balancing architecture and infrastructure.
  • Performance optimization: Expertise in optimizing load balancing performance for high-traffic applications.
  • Risk management: Identifying and mitigating potential risks associated with load balancing operations.
  • Change management: Managing and implementing changes to load balancing configurations seamlessly.
  • Budgeting: Experience in budget planning and cost optimization for load balancing projects.
  • Vendor evaluation: Evaluating and selecting load balancing vendors based on technical and business requirements.
  • Quality assurance: Ensuring the highest level of quality and reliability in load balancing implementations.

Cases when AWS ELB (Amazon Elastic Load Balancer) does not work

  1. Insufficient Capacity: AWS ELB may not work if there is not enough capacity available to handle the incoming traffic. In such cases, the ELB may become overwhelmed and fail to distribute the load effectively.
  2. Unhealthy Instances: If the instances registered with the ELB are unhealthy, the ELB may not be able to route traffic to them. Unhealthy instances could be due to various reasons such as network failures, high CPU utilization, or application-level issues.
  3. Incorrect Configuration: Misconfiguration of the ELB can lead to it not functioning correctly. For example, if the ELB is not properly configured to listen on the correct ports or protocols, it may not be able to route traffic to the instances.
  4. Security Group Restrictions: If the security groups associated with the instances do not allow incoming traffic from the ELB, the ELB will not be able to forward requests to the instances. This can happen if the security group rules are incorrectly configured or if there are network ACLs blocking the traffic.
  5. SSL/TLS Certificate Issues: When using SSL/TLS termination on the ELB, if the certificate is expired, invalid, or not properly configured, the ELB may not be able to establish secure connections with the clients.
  6. Network Connectivity Problems: If there are network connectivity issues between the ELB and the instances, such as firewall rules blocking communication or instances being in a different VPC/subnet, the ELB may not be able to route traffic to the instances.

How and where is AWS ELB (Amazon Elastic Load Balancer) used?

Case NameCase Description
High Availability and Fault ToleranceAWS ELB provides high availability and fault tolerance for applications by distributing incoming traffic across multiple EC2 instances. By leveraging ELB, applications can handle increased traffic and ensure that if one EC2 instance fails, traffic is automatically routed to the remaining healthy instances. This helps to eliminate single points of failure and improve the overall reliability of the application.
Auto ScalingELB integrates seamlessly with Amazon EC2 Auto Scaling, allowing applications to automatically scale up or down based on demand. When the traffic load increases, ELB can distribute the incoming requests to additional EC2 instances that are automatically launched by Auto Scaling. Conversely, during periods of low traffic, ELB can reduce the number of active instances, helping to optimize costs and resource utilization.
SSL TerminationELB supports SSL termination, which offloads the SSL/TLS encryption and decryption process from the EC2 instances. This helps to improve the performance of the application by reducing the computational overhead on the instances. ELB can handle SSL/TLS termination and encryption, freeing up the instances to focus on processing application logic and reducing response times for end users.
Session StickinessELB provides session stickiness, which ensures that subsequent requests from a user are consistently routed to the same EC2 instance in a load-balanced pool. This is particularly useful for applications that require session state to be maintained, such as e-commerce platforms or applications with user login sessions. By maintaining session stickiness, ELB enhances the user experience and prevents disruptions caused by session data being lost between different instances.
Health Checks and MonitoringELB performs regular health checks on the registered EC2 instances to ensure they are available and functioning properly. If an instance fails the health check, ELB automatically removes it from the load balancer’s rotation, preventing traffic from being directed to the unhealthy instance. Additionally, ELB provides detailed monitoring and metrics, allowing developers to gain insights into the performance and health of their application’s infrastructure.

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