Who should read it: It is for you if you are looking for a quick overview of this topic for a project, to conduct/appear in an interview, or in general. As we learn more, we will update this article.
What is Cloud computing: Cloud computing is an on-demand IT resources and applications via the internet with the pay-as-you-go solution. In a simpler way, cloud computing provides ways to access servers, databases, storage, and many application services over the internet.
Why cloud infrastructure matters:
As of today, AWS has 81 availability zones within 25 geographic regions. On a high level, AWS cloud infrastructure these main benefits:
- Security
- Availability
- Performance
- Global Footprint
- Scalability
- Flexibility
Advantages of cloud computing: Six major advantages are below:
- Variable versus Capital Expense: Instead of setting up servers and paying the cost of it, we can pay for the infrastructure per the usage.
- Economies of Scale: Using cloud resources like AWS can reduce the cost.
- Stop guessing capacity: Companies can gain as little or as much per the requirement, within a short notice.
- Increase speed and agility: new IT resources can be made available very quickly.
- Focus on business differentiators: Businesses can stop focusing on maintaining the infrastructure and focus on main business items.
- Go global in minutes: it’s easy to expand the applications globally, in few minutes.
Cloud computing models:
- All-in cloud based applications: everything on cloud.
- Hybrid deployment: A hybrid solution with some parts on cloud and some on on-premises.
AWS compute and networking services:
- Amazon Elastic Compute Cloud (EC2): it’s a service that provides resizable compute capacity in the cloud. Organization can select memory, CPU, etc. per their need.
- AWS Lambda: It’s a platform that allows developers to have zero maintenance of infrastructure. AWS deploys the code on Amazon EC2 instances.
- Auto-scaling: Auto scaling allows companies to scale up or down the resources as needed.
- Elastic load balancing: Elastic load balancing allows automatic distribution of traffic across Amazon load balancers.
- AWS elastic Beanstalk: To deploy a web application faster, this service handles resource provisioning, monitoring, etc. automatically.
- Amazon Virtual private Cloud (Amazon VPC): Amazon VPC allows organizations to control the AWS infrastructure, by allowing them to choose IP address, etc.
- AWS Direct Connect: This provides direct network connections between a company\’s owned data centers and AWS.
- Amazon Route 53: It’s a highly scalable DNS service. For example, using Route 53, I configured my own domain name with AWS.
Storage and Content delivery:
- Simple Storage Service (Amazon S3): Amazon S3 provide the storage for various usages like storing files, code backups, etc.
- Amazon Glacier: It’s a low cost service that allows data storage for the long term backups.
- Amazon Elastic Block Store (Amazon EBS): Amazon EBS provide block-level storage volume for use within Amazon EC2 instances.
- AWS Storage Gateway: AWS Storage Gateway service connects on-premises software appliances with AWS infrastructure.
- Amazon CloudFront: It’s a content delivery web service.
Databases:
- Amazon Relational Database Service (Amazon RDS): It’s a fully managed relational database service.
- Amazon DynamoDB: It’s a NOSQL database service.
- Amazon RedShift: It’s a petabyte-scale data warehouse service.
- Amazon ElastiCache: It’s a service that provides in-memory cache in the cloud. It supports Memcached and Redis cache engines.
Management Tools:
- Amazon CloudWatch: It’s a monitoring service for cloud resources and cloud hosted applications.
- AWS CloudFormation: It provides a way to effective manage a collection of AWS resources.
- AWS CloudTrail: It records logs for the audit and review.
- AWS Config: This service provides configuration history and configuration change notifications.
Security and Identity services:
- AWS Identity and Access Management (IAM): It allows organization users to securely access AWS cloud services.
- AWS Key Management Service (KMS): It allows users to create encryption keys to encrypt the data. It uses Hardware Security Modules (HMS) to protect the security of the keys.
- AWS Directory Service: AWS Directory Service uses Microsoft Active Directory. Using AWS Directory Service, organization users and user groups can manage single sign-on, group user accounts, etc.
- AWS Certificate Manager: It’s a service that manages SSL/TLS certificates for use with AWS cloud services.
- AWS Web Application Firewall (WAF): WAF allows to manage security and allow/deny access of web applications, for the security attacks prevention.
Application Services:
- Amazon API Gateway: It is a managed service that helps developers to create, publish, maintain, and secure APIs.
- Amazon Elastic Transcoder: It’s a media transcoding in the cloud. Transcoding is a process to convert an audio or a video file from one format to another.
- Amazon Simple Notification Service (SNS): Amazon SMS is a service to delivery messages to recipients.
- Amazon Simple Email Service (SES): It is an email service, to send any kind of emails to their customers.
- Amazon Simple Workflow Service (SWS): SWS is a workflow service that can run jobs in parallel or in a sequential steps. It has retry features.
- Amazon Simple Queue Service (SQS): SQS is a messaging queueing service.
Five pillars of Amazon Web Services (AWS):
- Operational excellence:
- Infrastructure as a Code (IaC): There are two main services: CloudFormation and Cloud Development Kit (CDK)
- Observability: it’s a process of monitoring infrastructure metrics at three levels:
◦ Infrastructure level
◦ Application level
◦ Account level
- Three things:
- PRINCIPAL(S) for WHO has permissions to
- ACTION(S) for WHAT to perform
- RESOURCE(S) specifies which properties to access
- Network Security: A zero trust on Network Security involves a defense in search approach. It involves Network Level Security and Resource Level Security. Data Encryption is about a plan to encrypt the data in the transit and at rest.
- Reliability: this pillar focuses on building services resilient to both service and infrastructure disruptions
- Performance efficiency: focuses on running services efficiently and scalably. AWS focuses on two categories:
-
- Selection: For the selection, there are three things you need to consider:
-
-
- Type of service: it could be VM based, container based, or serverless based.
- Degree of Management
- Configuration
-
- Scaling: Is is easy to scale in AWS
- Cost optimization: this pillar helps achieve business outcomes while minimizing costs. Think of cloud spend in terms of Opex, instead of Capex. Opex is a pay as you go model. Capex is a one time cost.
References:
- Performance efficiency: focuses on running services efficiently and scalably. AWS focuses on two categories:
-
- Selection: For the selection, there are three things you need to consider:
-
-
- Type of service: it could be VM based, container based, or serverless based.
- Degree of Management
- Configuration
-
- Scaling: Is is easy to scale in AWS
- Cost optimization: this pillar helps achieve business outcomes while minimizing costs. Think of cloud spend in terms of Opex, instead of Capex. Opex is a pay as you go model. Capex is a one time cost.
References:
- Performance efficiency: focuses on running services efficiently and scalably. AWS focuses on two categories:
-
- Selection: For the selection, there are three things you need to consider:
-
-
- Type of service: it could be VM based, container based, or serverless based.
- Degree of Management
- Configuration
-
- Scaling: Is is easy to scale in AWS
- Cost optimization: this pillar helps achieve business outcomes while minimizing costs. Think of cloud spend in terms of Opex, instead of Capex. Opex is a pay as you go model. Capex is a one time cost.
References:
- Performance efficiency: focuses on running services efficiently and scalably. AWS focuses on two categories:
-
- Selection: For the selection, there are three things you need to consider:
-
-
- Type of service: it could be VM based, container based, or serverless based.
- Degree of Management
- Configuration
-
- Scaling: Is is easy to scale in AWS
- Cost optimization: this pillar helps achieve business outcomes while minimizing costs. Think of cloud spend in terms of Opex, instead of Capex. Opex is a pay as you go model. Capex is a one time cost.
References:
- Performance efficiency: focuses on running services efficiently and scalably. AWS focuses on two categories:
-
- Selection: For the selection, there are three things you need to consider:
-
-
- Type of service: it could be VM based, container based, or serverless based.
- Degree of Management
- Configuration
-
- Scaling: Is is easy to scale in AWS
- Cost optimization: this pillar helps achieve business outcomes while minimizing costs. Think of cloud spend in terms of Opex, instead of Capex. Opex is a pay as you go model. Capex is a one time cost.
References:
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