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AWS Cheat Sheets

Home » AWS Cheat Sheets » Page 18

Elastic Container Service (ECS) vs Lambda

2023-04-08T05:18:48+00:00

Amazon EC2 Container Service (ECS) AWS Lambda Amazon ECS is a highly scalable, high performance container management service that supports Docker containers and allows you to easily run applications on a managed cluster of Amazon EC2 instances. ECS eliminates the need for you to install, operate, and scale your own cluster management infrastructure. With ECS, deploying containerized applications is easily accomplished. This service fits well in running batch jobs or in a microservice architecture. You have a central repository where you can upload your Docker Images from ECS container for safekeeping called Amazon ECR. Applications in ECS can be written [...]

Elastic Container Service (ECS) vs Lambda2023-04-08T05:18:48+00:00

Service Control Policies (SCP) vs IAM Policies

2023-04-12T00:38:41+00:00

Service Control Policies (SCP) IAM Policies SCPs are mainly used along with AWS Organizations organizational units (OUs). SCPs do not replace IAM Policies such that they do not provide actual permissions. To perform an action, you would still need to grant appropriate IAM Policy permissions. Even if a Principal is allowed to perform a certain action (granted through IAM Policies), an attached SCP will override that capability if it enforces a Deny on that action. SCP takes precedence over IAM Policies. SCPs can be applied to the root of an organization or to individual accounts in an OU. When you [...]

Service Control Policies (SCP) vs IAM Policies2023-04-12T00:38:41+00:00

S3 Transfer Acceleration vs Direct Connect vs VPN vs Snowball Edge vs Snowmobile

2024-01-18T07:05:33+00:00

S3 Transfer Acceleration (TA) AWS Direct Connect AWS VPN Amazon S3 Transfer Acceleration makes public Internet transfers to S3 faster, as it leverages Amazon CloudFront’s globally distributed AWS Edge Locations. There is no guarantee that you will experience increased transfer speeds. If S3 Transfer Acceleration is not likely to be faster than a regular S3 transfer of the same object to the same destination AWS Region, AWS will not charge for the use of S3 TA for that transfer. This is not the best transfer service to use if transfer disruption is not tolerable. S3 TA provides the same security [...]

S3 Transfer Acceleration vs Direct Connect vs VPN vs Snowball Edge vs Snowmobile2024-01-18T07:05:33+00:00

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer

2024-01-23T04:46:06+00:00

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer Feature Application Load Balancer Network Load Balancer Gateway Load Balancer Protocols HTTP, HTTPS, gRPC TCP, UDP, TLS IP Platforms VPC VPC VPC Health checks HTTP, HTTPS, gRPC TCP, HTTP, HTTPS TCP, HTTP, HTTPS Cloudwatch Metrics Yes Yes Yes Logging Yes Yes Yes Zonal Failover Yes Yes Yes Connection Draining (deregistration delay) Yes Yes Yes Load Balancing to multiple ports on the same instance Yes Yes Yes IP addresses as targets Yes Yes (TCP, TLS) Yes Load Balancer deletion protection Yes Yes Yes Configuration idle connection timeout Yes     [...]

Application Load Balancer vs Network Load Balancer vs Gateway Load Balancer2024-01-23T04:46:06+00:00

Elastic Beanstalk vs CloudFormation vs OpsWorks vs CodeDeploy

2024-12-17T08:06:00+00:00

AWS Elastic Beanstalk AWS CloudFormation AWS Elastic Beanstalk makes it even easier for developers to quickly deploy and manage applications in the AWS Cloud. Developers simply upload their application, and Elastic Beanstalk automatically handles the deployment details of capacity provisioning, load balancing, auto-scaling, and application health monitoring. This platform-as-a-service solution is typically for those who want to deploy and manage their applications within minutes in the AWS Cloud without worrying about the underlying infrastructure.  AWS Elastic Beanstalk supports the following languages and development stacks: Apache Tomcat for Java applications Apache HTTP Server for PHP applications Apache HTTP Server for Python [...]

Elastic Beanstalk vs CloudFormation vs OpsWorks vs CodeDeploy2024-12-17T08:06:00+00:00

Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS

2023-04-07T04:00:56+00:00

Amazon Simple Workflow (SWF) A web service that makes it easy to coordinate work across distributed application components. In Amazon SWF, tasks represent invocations of logical steps in applications. Tasks are processed by workers which are programs that interact with Amazon SWF to get tasks, process them, and return their results. The coordination of tasks involves managing execution dependencies, scheduling, and concurrency in accordance with the logical flow of the application. AWS Step Functions A fully managed service that makes it easy to coordinate the components of distributed applications and microservices using visual workflows. You define state machines that describe [...]

Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS2023-04-07T04:00:56+00:00

CloudWatch Agent vs SSM Agent vs Custom Daemon Scripts

2023-04-08T04:26:22+00:00

CloudWatch Agent SSM Agent (AWS Systems Manager) Custom Daemon Scripts CloudWatch agent allows you to collect more system-level metrics from your EC2 and on-premises servers than just the standard CloudWatch metrics. It also enables you to retrieve custom metrics from your applications or services using the StatsD and collectd protocols. StatsD is supported on both Linux servers and servers running Windows Server. collectd is supported only on Linux servers. You can use CloudWatch agent to collect logs from your servers and send them to CloudWatch Logs. Metrics collected by the CloudWatch agent are billed as custom metrics. You can install [...]

CloudWatch Agent vs SSM Agent vs Custom Daemon Scripts2023-04-08T04:26:22+00:00

S3 Pre-signed URLs vs CloudFront Signed URLs vs Origin Access Identity (OAI) vs Origin Access Control (OAC)

2023-08-30T13:09:41+00:00

  S3 Pre-signed URLs CloudFront Signed URLs Origin Access Identity (OAI) Origin Access Control (OAC) All S3 buckets and objects by default are private. Only the object owner has permission to access these objects. Pre-signed URLs use the owner’s security credentials to grant others time-limited permission to download or upload objects. When creating a pre-signed URL, you (as the owner) need to provide the following: Your security credentials An S3 bucket name An object key Specify the HTTP method (GET to download the object or PUT to upload an object) Expiration date and time of the URL. You can control user [...]

S3 Pre-signed URLs vs CloudFront Signed URLs vs Origin Access Identity (OAI) vs Origin Access Control (OAC)2023-08-30T13:09:41+00:00

EBS – SSD vs HDD

2024-01-25T07:23:57+00:00

On a given volume configuration, certain I/O characteristics drive the performance behavior for your EBS volumes. SSD-backed volumes, such as General Purpose SSD (gp2) and Provisioned IOPS SSD (io1,io2), deliver consistent performance whether an I/O operation is random or sequential. HDD-backed volumes like Throughput Optimized HDD (st1) and Cold HDD (sc1) deliver optimal performance only when I/O operations are large and sequential. In the exam, always consider the difference between SSD and HDD as shown on the table below. This will allow you to easily eliminate specific EBS-types in the options which are not SSD or not HDD, depending on [...]

EBS – SSD vs HDD2024-01-25T07:23:57+00:00

Security Group vs NACL

2024-08-05T01:51:49+00:00

Security Group Network Access Control List Acts as a firewall for associated Amazon EC2 instances. Acts as a firewall for associated subnets. Controls both inbound and outbound traffic at the instance level. Controls both inbound and outbound traffic at the subnet level. You can secure your VPC instances using only security groups. Network ACLs are an additional layer of defense. Supports allow rules only. Supports allow rules and deny rules. Stateful (Return traffic is automatically allowed, regardless of any rules). Stateless (Return traffic must be explicitly allowed by rules). Evaluates all rules before deciding whether to allow traffic. Evaluates rules [...]

Security Group vs NACL2024-08-05T01:51:49+00:00

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