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What is serverless computing in AWS?

Serverless computing in AWS refers to a cloud computing model where you can run code without managing servers. In this model, AWS takes care of the underlying infrastructure, including server provisioning, scaling, patching, and maintenance. Instead of worrying about servers, you focus on writing code in the form of small, single-purpose functions or services. These functions are executed in response to events, such as HTTP requests, changes to data in a storage service, or scheduled triggers.

Key characteristics of serverless computing in AWS include:

Event-Driven: Serverless applications in AWS are event-driven, meaning they respond to specific events or triggers. Events can come from various sources, including user actions, external systems, or internal services.

Auto-Scaling: AWS automatically scales your serverless functions to handle incoming requests and events. Functions can run in parallel to accommodate increased workloads, and you only pay for the compute resources consumed during execution.

Statelessness: Serverless functions are stateless, which means they don't maintain server-side state between invocations. Each function execution is isolated, making it easy to scale and ensuring no interference between requests.

Pay-Per-Use Billing: With serverless computing, you are billed based on the number of requests and the execution time of your functions. There are no upfront costs or charges for idle resources, making it a cost-effective option for variable workloads.

Integration with AWS Services: Serverless applications can leverage a wide range of AWS services for tasks such as data storage, messaging, authentication, and more. AWS Lambda, the core serverless compute service in AWS, can seamlessly integrate with other AWS services.

Multiple Programming Languages: AWS Lambda, which is at the heart of serverless computing in AWS, supports multiple programming languages, including Python, Node.js, Java, Ruby, C#, PowerShell, and custom runtimes.

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Is AWS Lambda serverless computing?

Yes, AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). Serverless computing is a cloud computing model that allows you to run code without provisioning or managing servers. AWS Lambda is a prime example of a serverless platform, and it offers the following key features:

No Server Management

With AWS Lambda, you don't need to worry about server provisioning, scaling, patching, or maintenance. AWS takes care of all the underlying infrastructure, allowing you to focus solely on your code.

Event-Driven

AWS Lambda functions are triggered by specific events, such as changes to data in an Amazon S3 bucket, updates to a database table, or HTTP requests via Amazon API Gateway. When an event occurs, Lambda automatically runs the associated function.

Auto-Scaling

AWS Lambda scales your functions automatically based on the incoming workload. It can handle a single request or millions of requests simultaneously, ensuring that you only pay for the compute resources you use.

Stateless

Lambda functions are stateless, meaning they don't maintain persistent server-side state between invocations. They operate independently for each event, making them highly scalable and fault-tolerant.

Pay-Per-Use

With Lambda, you are billed based on the number of requests and the execution time of your functions. There is no charge for idle resources, which makes it cost-effective for workloads with variable or sporadic traffic.

Integration with Other AWS Service

Lambda integrates seamlessly with various AWS services, making it a powerful tool for building event-driven applications and workflows. It can be used for data processing, real-time file processing, backend API logic, and more.

Support for Multiple Programming Languages

AWS Lambda supports a variety of programming languages, including Python, Node.js, Java, Ruby, C#, PowerShell, and custom runtimes. This flexibility allows you to choose the language that best suits your application.

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Which AWS certification is most in demand?

The demand for AWS (Amazon Web Services) certifications can vary depending on factors such as your location, your specific career goals, and the needs of the job market. As of my last knowledge update in September 2021, several AWS certifications were in high demand due to the widespread adoption of cloud computing and AWS services. However, it's important to note that the popularity and demand for certifications can change over time.

Here are some AWS certifications that were often considered among the most in demand as of my last update:

AWS Certified Solutions Architect - Associate

This certification is popular for individuals involved in designing and architecting AWS solutions. Solutions architects play a crucial role in ensuring that AWS deployments are scalable, cost-effective, and aligned with business needs.

AWS Certified Developer - Associate

Developers who build applications on AWS often pursue this certification. It focuses on developing, deploying, and debugging AWS applications, making it valuable for those in development roles.

AWS Certified SysOps Administrator - Associate

SysOps administrators are responsible for the deployment, management, and operation of AWS environments. This certification is valuable for professionals tasked with ensuring the reliability and performance of AWS systems.

AWS Certified Solutions Architect - Professional

For individuals seeking advanced expertise in AWS architecture, this professional-level certification is in demand. It covers complex architectural concepts and best practices.

AWS Certified DevOps Engineer - Professional

DevOps engineers who want to specialize in AWS often pursue this certification. It emphasizes automation, continuous integration/continuous delivery (CI/CD), and infrastructure as code (IaC).

AWS Certified Security - Specialty

As security remains a top concern in cloud computing, the AWS Certified Security - Specialty certification is in demand. Security professionals use this certification to demonstrate their expertise in securing AWS environments.

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How much does AWS certification cost?

The cost of AWS (Amazon Web Services) certification exams varies depending on the level and type of certification. As of my last knowledge update in September 2021, here are some general pricing guidelines for AWS certification exams in the United States:

AWS Certified Cloud Practitioner: The Cloud Practitioner exam typically costs $100 USD.

Associate-Level Exams (e.g., AWS Certified Solutions Architect - Associate, AWS Certified Developer - Associate, AWS Certified SysOps Administrator - Associate): Associate-level exams generally cost $150 USD each.

Professional-Level Exams (e.g., AWS Certified Solutions Architect - Professional, AWS Certified DevOps Engineer - Professional): Professional-level exams typically cost $300 USD each.

Specialty Exams (e.g., AWS Certified Security - Specialty, AWS Certified Machine Learning - Specialty, AWS Certified Database - Specialty): Specialty exams usually cost $300 USD each.

Please note that these prices are subject to change, and AWS may adjust exam fees over time. Additionally, prices can vary by region, so it's essential to check the AWS Training in Chandigarh and Certification website or the Pearson VUE website (the organization that administers AWS exams) for the most up-to-date pricing information and regional variations.

AWS sometimes offers exam vouchers or promotions, so it's a good idea to explore any current offers or discounts that may be available when you plan to take your certification exam.

Keep in mind that the cost of the exam is just one aspect of AWS certification. You may also need to invest in study materials, training courses, practice exams, and other resources to prepare effectively for your chosen certification.

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What is the top priority of AWS?

Amazon Web Services (AWS) is a vast and multifaceted cloud computing platform that serves a wide range of customers and industries. AWS's top priority is to meet the diverse needs and requirements of its customers effectively. While AWS has several key priorities, the overarching goal is to provide reliable, scalable, and secure cloud services that enable customers to build and run their applications with confidence.

Here are some of the top priorities for AWS

Customer Obsession: AWS course online It is committed to being customer-centric. Understanding and addressing the unique needs of its customers is at the core of AWS's mission. AWS continually seeks feedback from customers to improve its services and meet their evolving requirements.

Reliability and Availability: AWS places a high emphasis on delivering reliable and highly available cloud services. AWS's global network of data centers, known as Availability Zones, is designed to provide redundancy and failover capabilities to ensure that customer applications remain available.

Security: Security is a paramount concern for AWS. AWS invests heavily in security measures to protect customer data and resources. This includes robust identity and access management (IAM) controls, encryption, compliance certifications, and security features across its services.

Scalability and Flexibility: AWS offers a wide range of services and resources that can scale up or down to meet the needs of applications, from startups to large enterprises. Customers can dynamically adjust their infrastructure to match demand, optimizing costs and performance.

Innovation: AWS is known for its continuous innovation in cloud technology. AWS introduces new services and features regularly, empowering customers to leverage cutting-edge technologies such as machine learning, serverless computing, and containers.

Cost Optimization: While providing a wide range of services, AWS also focuses on cost optimization. AWS offers pricing models that align with customer usage and provides tools for monitoring and controlling costs, helping customers maximize their return on investment (ROI).

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What is the first step in getting started with AWS?

The first step in getting started with AWS (Amazon Web Services) is to create an AWS account. Here's a step-by-step guide on how to do that:

Visit the AWS Website

Open your web browser and go to the official AWS website: https://aws.amazon.com/

Click on "Create an AWS Account"

On the AWS homepage, click on the "Create an AWS Account" button. This will take you to the AWS account creation page.

Choose Your Account Type

You will have two options:

Root User: This is the primary account holder and has full control over billing and account management. You can sign up as the root user or delegate account management to others later.

IAM User: If you want to set up separate accounts with limited permissions for different users or applications, choose this option. However, you'll still need to create a root user account first.

Follow the Sign-Up Process

Fill out the required information, including your email address, password, and AWS account name. This account name will be used as the account alias.

Provide your contact information and agree to the AWS course in Chandigarh Customer Agreement.

Payment Information

Enter your payment information. AWS requires a valid credit card to verify your identity. However, some AWS regions also accept alternative payment methods like PayPal.

Identity Verification

AWS may perform an identity verification process. This may involve receiving a call from AWS and entering a verification code on the phone.

Choose a Support Plan

You will have the option to select a support plan. AWS offers a free Basic Support plan, but you can also choose a paid support plan for additional benefits and technical support.

Complete the Sign-Up Process

Once you've provided all the necessary information and selected your support plan, click "Continue" to complete the sign-up process.