AWS Well-Architected – Page 6

VIDEO SERIES – Disaster Recovery. What is it and why is it so important?

In this educational series video, Wolk’s CEO goes outlines exactly what a Disaster Recovery Plan is and how it should be a crucial part of any business security policy.

Work With an Experienced AWS Partner
WOLK Technology understands better than anyone else that today’s workflows must perform as expected around the clock, without interruptions. For this reason, we offer tailored solutions to help ensure your AWS business is secure, reliable, and free of unnecessary risks. Contact us today for more information.

VIDEO SERIES – An Overview of the AWS Well-Architected

In this educational series video, Wolk’s CEO goes into exactly what a Well Architected Review is and how it can benefit your business. The best part? For many, a Well Architected Review can be a cost neutral exercise that saves you big in the long run.

An Overview of the AWS Well-Architected Tool

The Amazon Web Services Well-Architected Tool (AWS WA Tool) is an Amazon cloud service designed to aid you in documenting and measuring your workloads with a high degree of accuracy. The primary purpose of this tool is to provide specific guidance according to the principles of the Well-Architected Framework.

The AWS WA Tool is free and available to all AWS users through the Management Console. Here’s an overview of the WA Tool and how it works.

Workload Definition
The AWS WA Tool is designed to provide consistent and accurate measurements of your workloads, document your workload decisions, and provide recommendations to improve efficiency.

However, before the WA Tool can provide you with data, you must first define your workloads by following a few essential steps. If you manage multiple workloads, repeat these steps for each one that applies.

Workload State Documentation
Once you have defined the workload, the tool will ask you a series of questions to learn about your needs and practices according to the six pillars of the Well-Architected Framework. These six pillars are operational excellence, security, reliability, performance efficiency, cost optimisation, and sustainability.

Framework Lens and Improvement Plan
The AWS WA Tool will review the data you entered in the previous steps and identify potential vulnerabilities and risks, classifying them by severity, such as high risk or medium risk. It will then offer a multi-step improvement plan to address each risk and help your workload fully comply with the Well-Architected Framework.

● High-risk issues are operational or architectural choices that the AWS WA Tool has determined might be significantly detrimental to your business. These elements may negatively impact operations, assets, or individuals.
● Medium-risk issues are operational or architectural choices that the WA Tool believes might risk your business, but to a lesser degree than high-risk issues. These issues may also have a lesser chance of negatively affecting operations, assets, and individuals.

After determining the risk points, follow the recommendations to eliminate vulnerabilities, implement improvements, and track progress for each step.
You can identify each step with one of five markers: None, Not Started, In Progress, Complete, and Risk Acknowledged.

The first four indicate risk mitigation progress markers, whereas Risk Acknowledged is a marker typically reserved for risks your business cannot mitigate, like accepting a specific risk point and accepting all potential outcomes as possibilities.

How AWS Can Help with Disaster Recovery

One of the central tenets of the Well-Architected Framework is planning for failure. Even though the goal is to avoid problems, they will still occasionally occur. If you and your team have a clear goal in place following AWS guidelines, the failure will cost you less time.

The first steps to help with disaster recovery have to do with preparation. Have backups in place and create redundant workload components.

The Well-Architected Framework has laid out five best practices to help you plan for disaster recovery.

1. Define Recovery Objectives
Define your recovery time objectives (RTOs) and recovery point objectives (RPOs) based on business goals. To create these objectives, break down your workload into categories of need. You’ll want to create five categories or less.

When determining your categories, consider whether the workload tools are internal or public. You will also want to identify the primary business driver and estimate the downtime’s impact on your business.

2. Meet Recovery Objectives
After creating your categories, you can design a disaster recovery (DR) plan that meets your objectives. Depending on the structure of your workload, you might require a multi-region strategy. AWS suggests several strategies of varying complexity and cost.

You can choose a simple backup and restore strategy, meaning you store your data in the DR region. In case of a disaster, you can restore RPO within hours and RTO within 24 hours.

The Pilot Light strategy lessens the recovery time by maintaining a small version of your core system in the DR region. RPO recovery time is minutes, and RTO is hours.

The Warm Standby strategy offers an even shorter recovery, achieving the RPO in seconds and the RTO in minutes. In this strategy, you keep a mini version of your full system always running in the DR region. In case of disaster, you can quickly increase its capacity to handle all your business’ needs.

The Multi-region Active-active strategy uses multiple AWS regions. If one region fails, you can redirect traffic to the other regions.

3. Test Disaster Recovery Implementation
Whichever strategy you choose, it’s critical to evaluate it regularly. Ensure that all backup systems are functioning and your plan meets your RPO and RTO in the correct amount of time.

4. Manage Configuration Drift
Keep an eye on your DR region, ensuring the infrastructure, data, and configuration are in good condition.

5. Automate Recovery
Use automated recovery systems like CloudEndure Disaster Recovery to remove the possibility of human error.

Schedule a Well-Architected Review
To ensure your strategies follow the guidelines of the Well-Architected Framework, schedule a Well-Architected Review. AWS Partner, WOLK can identify any issues in your designs and mitigate them for you.

Tracking and Backing Up Data with AWS

It’s essential to back up all your data regularly. However, it’s just as important to test your back-up files regularly.

The reliability pillar of the Well-Architected Framework offers guidelines to ensure your backups are safe and protected against failures. AWS also provides various options to help you safely back up your data.

Best Practices to Protect Your Backups
There are four best practices that can help ensure the safety of your data and backups. Remember to back up your applications and configuration as well, ensuring your backups meet your recovery time objectives (RTOs) and recovery point objectives (RPOs).

● Identify and Backup All Data
Your first step is to identify all the data you want to back up. You might not need to back it up if it can be recreated from other sources and still meet your RPO. Once you’ve classified your data, you need to decide how to back it up.

As an AWS customer, you have access to their many backup options. Amazon S3 allows for the storage of multiple backup files. Several AWS services have built-in backup systems. If you use Amazon EBS, RDS or DynamoDB, you can set them to automatically backup your files, and store them elsewhere.

You can also use third-party systems to backup or store your files.

● Secure Your Backups
Just like your servers, you must ensure the security of your backups. If you use AWS’s services to create backups, enable encryption before backing up. If you use a third-party system, you might need to encrypt them yourself.

You should also restrict access to the backups. Only allow team members who require it access. Monitor the backups for any unauthorised access.

● Automate Data Backup
To ensure you always have a recent backup, use AWS Backup to automatically backup your files at regular intervals.

AWS Backup allows you to set different schedules for different workloads and to determine precisely where you want your backups stored. It enables you to create Backup Plans and Backup Vaults, giving you flexibility.

● Verify Your Backups
At regular intervals, test your backup files and procedures to ensure they meet your RTOs and RPOs.

Maintaining a Resilient Workload
If your systems aren’t fully compliant with the reliability pillar’s guidelines, you might want to set up an AWS Well-Architected Review. WOLK, a long-term AWS Partner, can identify any problem areas and mitigate them.

WOLK can help you maintain a reliable workload and ensure that your company is fully compliant with the Well-Architected Framework.

The 3 Forms of Compute Resources Under AWS

Compute resources are virtual servers and storage equipment that are accessed by multiple users. There are five pillars of the AWS Well-Architected Framework, including operational excellence, security, reliability, performance efficiency, and cost optimisation. The fourth pillar of performance efficiency incorporates computing resources’ effective use to meet technology’s changing demands.

Forms of Compute
In AWS (Amazon Web Service), there are three different forms of computing resources.
1. Instances
These are virtualised servers available in different sizes and types. They can offer additional capabilities like solid-state drivers (SSDs) and graphics processing units (GPUs). These resources are not fixed, so you have the flexibility to try out various types of servers.
2. Containers
A virtual operating system that allows you to run applications as isolated processes. AWS Fargate and Amazon EC2 are examples of computing used to manage containers. Additionally, there are other container platforms used for AWS: Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS).
3. Functions
One example of a function is the AWS Lambda, used to extract the processors, networks, and operating systems from the code you want to write. By selecting the right Compute Resources for your needs, you can achieve more with the same number of resources, maximising efficiency.

Compute Resources and AWS
With rapidly evolving cloud technologies, it’s critical to evaluate the performance of your operating systems. Assess compute options by considering cost requirements and the demand for workload performance.

To optimise efficiency, the best compute option for your workload varies depending on several factors. Due to the ever-changing demand for cloud-based systems, it is recommended to use elasticity mechanisms where possible. Working in the cloud gives you the ability to make changes to your system with ease when necessary.

Other factors to consider in computing include storage, databases, and networks. Cloud storage holds the information in your workload and is more reliable than traditional physical server storage. Networks should be updated over time to maintain efficiency, and AWS database options continuously track your workload.

Schedule a Review
You can schedule a review with WOLK, a certified partner of the AWS Well-Architected Program. An analysis of your cloud-based system will pinpoint any weak security points or other inefficiencies to make changes for maximum results.

Free service credit applied to your account will most likely cover the cost of these changes, preventing you or your company from paying out of pocket expenses.

AWS and Designing Performance Efficiency in the Cloud

In the AWS Well-Architected Framework, five pillars include operational excellence, security, reliability, performance efficiency, and cost optimisation. Performance efficiency refers to using computing resources efficiently in a cloud-based system.

Design Principles
There are five design principles for performance efficiency in the cloud.

1. Democratise advanced technology
Complex tasks assigned to your cloud vendor make adapting to technology easier on your company. Services such as machine learning and media transcoding are consumed in the cloud, rather than having a workforce team carry out these tasks.
2. Go global in minutes
Since there are various AWS regions worldwide, making your workload accessible anywhere, there is lower latency and better customer experience.
3. Use serverless architectures
As the name suggests, this technology removes the need for a physical server that must be maintained. Additionally, transaction costs are lower when services are managed in the cloud, optimising efficiency.
4. Experiment more often
With virtual and automated services, it’s easy and cost-effective to complete tests of different instances, storage, and configurations.
5. Consider mechanical sympathy
Make time to understand how cloud technology functions and choose the service that makes the most sense for your goals.

Best Practices
There are four areas of best practice when discussing performance efficiency in the cloud. These are selection, review, monitoring, and tradeoffs. Selecting the best solution for your workload is essential to maximising effectiveness and minimising your costs.

Since the AWS cloud is ever-evolving, it is a good idea to review these selections regularly. Gauging how well your solutions are working based on the data available allows you to make changes whenever objectives aren’t met.

Monitoring your workload is critical to identifying an issue before it impacts your customers. Amazon CloudWatch is a monitoring service that allows you to track your workload and get a comprehensive overview of the system. Quick response times keep systems running smoothly.

When maximising your workload, consider making tradeoffs. You might trade durability or consistency for latency, depending on the target. A tradeoff increases efficiency in one area by giving a little in an area that is already performing at its best.

Work With a Leading Partner
WOLK is proud to be a leading partner of the AWS Well-Architected program and is certified to provide reviews of cloud-based systems. An appraisal is a good idea when looking to identify where your performance deficiencies lie. An inspection will get you started on making the right adjustments to get your five pillars in alignment.

Cloud Reliability: The Five AWS Design Principles

The third pillar of the AWS Well-Architected Framework is reliability. It deals with ensuring that your workloads and applications produce the same results every time.

Using the five design principles of the reliability pillar, you can create workloads and applications that are reliable for their entire lifecycle.

Automatically Recover From Failure
Automation is a vital element in the reliability pillar. Set up systems that monitor for Key Performance Indicators (KPIs) of your business values. When one of the KPIs reads too low or too high, your monitoring system should automatically notify you and continue tracking the problem.

You can also set up automatic recovery systems that your monitoring systems trigger when there’s a problem.

To prepare as much as possible for failure, you can set up systems that track trends, meaning they can predict future problems.

Test Recovery Procedures
Just as you test your workload’s operating procedures, you should also evaluate its recovery methods. While working the cloud, use automation to cause a failure in your workload and observe how well the recovery systems and procedures work.

It’s also possible to use automation to recreate past failures. If you’re unsure of exactly where a failure occurred, a recreation can help you determine causes and ensure it doesn’t happen again.

Scale Horizontally
Instead of using one large workload, consider breaking it up into several smaller resources. If a failure occurs in an overarching workload, you might have to shut down your entire system for the repair.

Ensure you spread out your requests across the smaller resources so they don’t share a common failure.

Don’t Guess Capacity
Don’t just assume that your workload can handle the demands you place on it. One of the most common reasons that a workload fails is due to resource saturation.

Use AWS tools to monitor the demands placed on your workload and its saturation level. Create systems that automatically reduce demands when your workload approaches saturation.

Manage Change
Use automatic systems to change your workload. Automation removes human error, reducing your risk.

Changes made to automatic systems should be tracked and reviewed, preferably by another automated system.

Work with an AWS Well-Architected Partner
To ensure you are compliant with all five design principles of the reliability pillar, consider working with an experienced AWS Partner. The WOLK team stays up-to-date with the current design principles and best practices of the AWS Well-Architected Framework.

After performing a Well-Architected Review, we can identify any non-compliance issues and mitigate them for you.

What is the AWS Well-Architected Framework?

AWS Solutions Architects took their many years’ experience building solutions, and designing and reviewing thousands of customers’ architectures on AWS, and identified a set of best practices for architecting systems in the cloud. The result is the AWS Well-Architected Framework.

Based on 5 pillars – Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization – the Framework allows us to design and operate reliable, secure and cost-effective systems in the cloud, while sticking to best-practice architectural methodology.

The development of the AWS Well-Architected Tool has enabled regular review of workloads, identifying high risk issues and recording your improvements. Conducting a Well-Architected Review (WAR) allows a conversational approach rather than an audit process, and serves to establish well-architected systems that greatly increase the likelihood of business success.

The review documents a set of foundational questions that allow you to understand if a specific architecture aligns well with cloud best practices. The framework provides a consistent approach to evaluating systems against the qualities you expect from modern cloud-based systems, and the remediation that would be required to achieve those qualities. As AWS continues to evolve, the definition of well-architected will continue to be refined.

We begin all of our development projects with a Well-Architected Review to give clients full visibility of their workload. The precise and comprehensive nature of the Framework provides clients with essential insights that enable informed decisions that add business value.

We have years of experience architecting solutions across a wide range of business verticals and use cases, with several of our case studies being used by AWS.

4 AWS Best Practices For Improving Performance

The AWS Well-Architected Framework allows you to implement designs consistently and examine architectures that can grow and change with your business. The framework is built on five pillars. Each pillar has best practices recommended by AWS to help you create an efficient and successful workload.

The Performance Efficiency Pillar
The Performance Efficiency pillar of the AWS Well-Architected Framework focuses on using resources efficiently to support your cloud-based system and uphold that efficiency level as demand changes.

4 Best Practices
Within the Performance Efficiency pillar, there are four best practices to guide you in your system development.

1. Selection
It’s important to select the best performing architecture for your cloud-based systems. A well-architected workload incorporates various solutions because their differing features can enhance the system’s performance efficiency. A crucial part of the selection process is choosing the best resources.

Compute resources for AWS come in three forms: instances, functions, and containers. When making choices about your compute resources, you’ll need to use your knowledge of workload and cost requirements. Since resource selections in the cloud are flexible, you can experiment with your selections.

Storage is another key selection you’ll make as part of your AWS performance efficiency. Choose between object, block, and file storage in the cloud depending on your system requirements.

With AWS, you’ll also choose your database. Different kinds of cloud databases remedy issues present in your workload. Once you identify the specific problems in your workload, you can select the database that base addresses them.

A network is shared between all aspects of your workload, meaning its impact is significant. To select the best network for your system, identify bandwidth, jitter, throughput, and latency requirements.

2. Review
Best practices for performance efficiency include careful evaluation of the technologies and your workload components to ensure they’re as up-to-date as possible.

AWS innovation is continual and is driven forward by consumer demands. New features that can improve performance and architecture are released regularly, so it’s important to review your system frequently for possible areas of improvement.

3. Monitoring
After you make selections and your workload is running, it’s critical that you’re carefully monitoring the workload performance. Services like Amazon CloudWatch are available to give you actionable feedback about your system performance and the optimisation of resources.

Monitoring this data in real-time allows you to move swiftly when problems occur so you can rectify them before clients are impacted.

4. Trade-Offs
Architecting solutions require you to weigh the benefits of a solution against its implementation’s negative impacts. A trade-off can mean you’re exchanging consistency for latency to improve performance because there is a higher value in lower latency at that time.

Carefully review metrics to see how your trade-offs are affecting the workload and its performance efficiency.

Work With WOLK
WOLK is a proud leading partner of the AWS Well-Architected Framework and can provide a thorough review of your cloud-based systems. We are certified to perform a detailed appraisal and help you determine any weaknesses within your system that require immediate attention.