AWS Architecture Blog

Announcing the New Version of the Well-Architected Framework

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“Nothing is constant except for change.” – Unknown

We are announcing the availability of a new version of the AWS Well-Architected Framework. We’ve made changes in response to your feedback, as well as to industry trends that are becoming widely adopted. We focused on four themes: removing perceived repetition, adding content areas to explicitly call out previously implied best practices, and revising best practices to provide clarity. These changes are intended to make it easier for you to understand and implement the best practices in your workloads. In addition to updating all the Well-Architected Pillar whitepapers to align more closely with these best practices, we have also improved the usability of the AWS Well-Architected Tool (AWS WA Tool).


This is our first Framework update since we released the AWS WA Tool in the AWS Management Console at re:Invent 2018. However, this is actually the eighth version of the Framework since it was introduced in 2012. The Framework consists of design principles, questions, and best practices that can be achieved in many different ways and are written in a manner that is much broader than a “checklist.” The best practices can be implemented using technology (AWS or third party) or by processes, which can also be automated. The Framework is written to allow you to explore if you are actually accomplishing each best practice, rather than simply giving you “yes” or “no” questions to indicate if you have performed a particular action. Evaluating your design, architecture, and implementation should not be a checklist but an evaluation of your progress toward the desired outcome.

We revise the Framework every year through a Kaizen process, where we collect the data about what worked for customers, what could be improved to provide clarity, and what should be added or removed. The first three versions were purely internal releases—used by our Solutions Architects, Professional Services Consultants, and Enterprise Support teams to have conversations with customers about building and operating the best cloud architectures.

With the fourth version in 2015, we published our guidance as a whitepaper. This increased its visibility and pointed out a blind spot: we had not documented the operational best practices required to achieve the other pillars’ operational aspects. The fifth version, released the following year, included a new pillar to address our omission, Operational Excellence. It was revised two more times, once in 2017, when we released the pillar-specific whitepapers and AWS Well-Architected Lenses, and again in 2018 when we launched the AWS WA Tool.

What’s new

We have added more topics to the Operational Excellence pillar. These specifically relate to the structure of your organization and how your culture supports those organizational choices. There are also additional best practices that we have identified and clarified in the existing areas of Prepare, Operate, and Evolve.

Operational Excellence

The Security pillar has one less question, which we accomplished by refining the best practices and removing duplication. The most changes are in identity and access management and how to operate your workloads securely.

Security pillar

The Reliability pillar has three more questions, based around your workload architecture. These have been covered as part of failure management in the Reliability Pillar whitepaper since 2017, but they have elicited enough discussion and action with customers that we now explicitly call them out.

Reliability pillar

The number of questions in the Performance Efficiency pillar did not change, but we clarified the best practices.

Performance efficiency

The Cost Optimization pillar has introduced a new section on Cloud Financial Management (CFM), which added a new question along with the best practices associated with it.

Cost optimization

These changes make the best practices clearer, remove duplication, and explicitly call out the new best practices that we have identified as an important part of having great cloud workloads. Expect to see additional blog posts explaining the changes to each pillar in more detail.

With this release, the Framework in now available in ten languages: English, Spanish, French, German, Italian, Japanese, Korean, Brazilian Portuguese, Simplified Chinese, and Traditional Chinese.

Learn, measure, improve, & iterate

It’s a best practice to regularly review your workloads—even those that have not had major changes. Our internal standard is to perform reviews at least annually. We encourage you to review your existing workloads at least once this year, and to create milestones for your workloads as they evolve. Use the Framework to guide your design and architecture of new workloads, or of workloads that you are planning on moving to the cloud. The greatest successes have come from customers that take these best practices into consideration as early as possible in the process. In effective organizations, every best practice is considered and prioritized.

Continue to learn, measure, and improve your cloud workloads with the AWS Well-Architected Framework and use the AWS Well-Architected Tool to help document your progress to having Well-Architected workloads.

Learn more about the new version of Well-Architected and its pillars

Rodney Lester

Rodney Lester

Rodney is a Senior Solutions Architecture Manager, AWS Well-Architected. He has experience building highly available and scalable systems in multiple industries, and learned the importance of implementing security and operational requirements early. He joined AWS after using AWS at two different companies, building AWS Professional Services and Solutions Architecture.