replace pattern for spot vm

after feedback from hardware engineer, => proposal to replace spot VM pattern, with Efficient Hardware (ARM nodes, which are low cost and enegy efficient)

Author: yelghali

articles/aks/concepts-sustainable-software-engineering.md

@@ -3,7 +3,7 @@ title: Concepts - Sustainable software engineering in Azure Kubernetes Services
 description: Learn about sustainable software engineering in Azure Kubernetes Service (AKS).
 services: container-service
 ms.topic: conceptual
-ms.date: 10/21/2022
+ms.date: 10/25/2022
 ---
 
 # Sustainable software engineering practices in Azure Kubernetes Service (AKS)
@@ -61,7 +61,7 @@ We recommend careful consideration of these design patterns for building a susta
 | [Enable cluster and node auto-updates](#enable-cluster-and-node-auto-updates) |  | ✔️ |
 | [Install supported add-ons and extensions](#install-supported-add-ons-and-extensions) | ✔️ | ✔️ |
 | [Containerize your workload where applicable](#containerize-your-workload-where-applicable) | ✔️ |  |
-| [Use spot node pools when possible](#use-spot-node-pools-when-possible) |  | ✔️ |
+| [Use energy efficient hardware](#use-energy-efficient-hardware) |  | ✔️ |
 | [Match the scalability needs and utilize auto-scaling and bursting capabilities](#match-the-scalability-needs-and-utilize-auto-scaling-and-bursting-capabilities) |  | ✔️ |
 | [Turn off workloads and node pools outside of business hours](#turn-off-workloads-and-node-pools-outside-of-business-hours) | ✔️ | ✔️ |
 | [Delete unused resources](#delete-unused-resources) | ✔️ | ✔️ |
@@ -120,11 +120,11 @@ Containers allow for reducing unnecessary resource allocation and making better
 
 * Use [Draft](/azure/aks/draft) to simplify application containerization by generating Dockerfiles and Kubernetes manifests.
 
-### Use spot node pools when possible
+### Use energy efficient hardware
 
-Spot nodes use Spot VMs and are great for workloads that can handle interruptions, early terminations, or evictions such as batch processing jobs and development and testing environments.
+Ampere’s Cloud Native Processors are uniquely designed to meet both the high performance and power efficiency needs of the cloud. 
 
-* Use [spot node pools](/azure/aks/spot-node-pool) to take advantage of unused capacity in Azure at a significant cost saving for a more sustainable platform design for your [interruptible workloads](/azure/architecture/guide/spot/spot-eviction).
+* Evaluate if [nodes with Ampere Altra Arm–based processors](/blog/azure-virtual-machines-with-ampere-altra-arm-based-processors-generally-available/) are a good option for your workloads.
 
 ### Match the scalability needs and utilize auto-scaling and bursting capabilities