Amazon VPC allows companies to create a private, isolated section of the AWS Cloud where they can launch their EC2 instances. Within a VPC, companies can define security groups and network access control lists (ACLs) to control inbound and outbound traffic to their instances based on security rules. Therefore, Amazon VPC is the appropriate service for protecting EC2 instances against unauthorized access.

Amazon EC2 Auto Scaling allows companies to automatically adjust the number of EC2 instances in their fleet based on demand. It helps optimize the cost of running applications by dynamically scaling resources to match changes in workload. With EC2 Auto Scaling, companies can ensure that they have the right amount of compute capacity at all times, reducing the risk of under-provisioning or over-provisioning.

Amazon RDS provides a fully managed relational database service that supports various database engines, including PostgreSQL-compatible database engines. It offers features such as automated backups, point-in-time recovery, and high availability through Multi-AZ deployments. By using Amazon RDS, the company can migrate their existing PostgreSQL database to AWS and benefit from a fully managed and scalable database solution.

Server-Side Encryption with AWS Key Management Service (SSE-KMS) ensures that data stored in Amazon S3 is encrypted at rest using keys managed by AWS Key Management Service (KMS). SSE-KMS provides an additional layer of security by allowing companies to control and audit access to their encryption keys, providing enhanced protection for sensitive data.

Amazon VPC allows companies to create isolated sections of the AWS Cloud where they can launch their resources, including EC2 instances, within a virtual network. By using VPC, companies can create separate subnets, route tables, and security groups for each application environment, ensuring network isolation and security.

Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple EC2 instances in different Availability Zones to ensure high availability and fault tolerance. ELB performs health checks on instances and only routes traffic to healthy instances, minimizing the risk of downtime for web applications.

AWS IAM (Identity and Access Management) is the service provided by AWS for securely controlling access to AWS services and resources. IAM supports multi-factor authentication (MFA) and enables companies to centrally manage user identities, groups, and permissions for accessing AWS resources, making it the appropriate choice for implementing a secure authentication mechanism.

AWS Lambda is a serverless computing service provided by AWS that automatically scales resources based on incoming requests and triggers functions in response to events from various AWS services. Lambda eliminates the need for managing servers and allows companies to focus on writing code without worrying about infrastructure management, making it the ideal choice for deploying serverless applications.

Amazon Redshift is a fully managed data warehouse service provided by AWS that allows companies to analyze large volumes of data using SQL queries. Redshift is optimized for high-performance analytics and supports petabyte-scale data warehousing, making it suitable for storing and querying structured data for generating business insights.

Amazon CloudWatch is a monitoring and observability service provided by AWS. It allows companies to collect and track metrics, set alarms, and automatically react to changes in their AWS resources. CloudWatch provides insights into the operational health and performance of AWS resources, making it the appropriate choice for monitoring and managing AWS environments.

Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple instances in different Availability Zones to ensure high availability and fault tolerance. By using ELB, companies can ensure that their applications remain accessible even if some instances become unavailable, thereby achieving a highly available and fault-tolerant architecture.

AWS Direct Connect provides a dedicated private network connection between an organization’s on-premises data center and their AWS environment. It ensures secure and low-latency communication between the two environments, allowing companies to extend their existing infrastructure to the AWS Cloud seamlessly. Therefore, AWS Direct Connect is the appropriate choice for establishing a private network connection between on-premises data centers and AWS environments.

AWS Shield is a managed Distributed Denial of Service (DDoS) protection service provided by AWS that safeguards applications running on AWS against large and sophisticated DDoS attacks. AWS WAF (Web Application Firewall) is a web application firewall that helps protect web applications from common web exploits that could affect application availability, compromise security, or consume excessive resources. Therefore, using AWS Shield and AWS WAF together provides comprehensive protection against DDoS attacks and web application vulnerabilities.

AWS Lambda is a serverless computing service provided by AWS that automatically scales compute resources based on demand without the need to provision or manage servers. With Lambda, companies can run code in response to events and pay only for the compute time consumed by the code, optimizing both performance and cost.

Amazon Glacier is a secure, durable, and low-cost storage service provided by AWS for archiving infrequently accessed data for long-term retention. Glacier offers low-cost archival storage with flexible retrieval options, allowing companies to retrieve archived data within minutes to hours. Therefore, Amazon Glacier is the appropriate service for archiving infrequently accessed data from Amazon S3 buckets while minimizing storage costs.

Amazon VPC allows companies to create a virtual network in the AWS Cloud with multiple subnets spread across different Availability Zones. By using Amazon VPC, companies can ensure high availability and fault tolerance for their applications by distributing resources across multiple data centers within a region.

AWS Config is a service provided by AWS that enables companies to assess, audit, and evaluate the configurations of their AWS resources. AWS Config tracks changes to resources and provides detailed configuration history, allowing companies to identify security vulnerabilities and compliance issues. Additionally, AWS Config enables companies to define rules for assessing compliance against predefined configurations, ensuring the security and compliance of their AWS environment.

Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple EC2 instances to ensure high availability and fault tolerance. By using ELB, companies can achieve automatic scaling based on traffic demand and distribute incoming traffic across multiple instances to prevent overload and ensure a seamless user experience.

Amazon DynamoDB is a fully managed NoSQL database service provided by AWS. It offers single-digit millisecond latency for reads and writes, seamless scalability, and automatic data replication across multiple Availability Zones. DynamoDB is designed to handle massive workloads and provide fast, predictable performance, making it the ideal choice for applications that require high scalability and low-latency access to data.

Server-Side Encryption with AWS Key Management Service (SSE-KMS) encrypts data stored in Amazon S3 using keys managed by AWS Key Management Service (KMS). SSE-KMS provides granular access control and auditing capabilities through AWS KMS, allowing companies to manage access to their encrypted objects and ensure the confidentiality and integrity of their stored data.

Amazon GuardDuty is a threat detection service provided by AWS that continuously monitors for malicious activity and unauthorized behavior in AWS accounts and workloads. GuardDuty analyzes logs and network traffic data using machine learning algorithms to detect security threats, such as unusual API calls, compromised instances, and unauthorized access attempts. By using GuardDuty, companies can strengthen the security of their AWS environment and quickly respond to potential security incidents.

AWS Direct Connect provides dedicated, private network connections between an organization’s on-premises data center and their AWS environment. Direct Connect ensures secure and reliable connectivity, allowing companies to access AWS services without traversing the public internet, thereby improving security and reducing latency.

AWS Organizations is a service provided by AWS that enables companies to centrally manage and govern their AWS environment across multiple AWS accounts and regions. With Organizations, companies can apply policies and controls to enforce security and compliance standards, simplify billing and cost management, and streamline resource management across their AWS infrastructure.

Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple EC2 instances in different Availability Zones to ensure high availability and fault tolerance. ELB detects unhealthy instances and routes traffic only to healthy instances, providing fault tolerance and load distribution capabilities for web applications deployed on AWS.

Amazon VPC allows companies to create a virtual network in the AWS Cloud where they can launch their resources in an isolated environment. Within a VPC, companies can configure security groups and network access control lists (ACLs) to control inbound and outbound traffic to their resources, effectively creating a virtual firewall to protect against unauthorized access and potential security threats originating from the internet.

Amazon RDS is a fully managed relational database service provided by AWS that supports various database engines, including MySQL. RDS offers features such as automated backups, automatic failover with multi-AZ deployments, and high availability, making it an ideal choice for migrating existing MySQL databases to AWS while ensuring high availability and durability for database workloads.

AWS Lambda is a serverless computing service provided by AWS that allows companies to run code in response to events without provisioning or managing servers. Lambda automatically scales resources based on incoming requests and ensures high availability for serverless applications. With Lambda, companies can focus on writing code without worrying about infrastructure management, making it the ideal choice for deploying serverless applications on AWS.

Amazon S3 Intelligent-Tiering is a storage class provided by AWS that automatically moves objects between two access tiers: frequent access and infrequent access, based on access patterns. It helps optimize costs by automatically transitioning objects to the most cost-effective access tier, thereby reducing storage costs while maintaining high performance and availability.

AWS VPN (Virtual Private Network) allows companies to establish a secure and private connection between their AWS Virtual Private Cloud (VPC) and on-premises network over the internet. By using AWS VPN, companies can encrypt communication and ensure secure data transfer between their AWS resources and on-premises infrastructure.

Amazon CloudWatch is a monitoring and observability service provided by AWS that allows companies to collect and monitor log data in real-time from AWS resources and applications. CloudWatch provides features such as log aggregation, analysis, and visualization, enabling companies to gain insights into the operational health and performance of their AWS environment.