Organizations of all sizes are feeling the pressure to introduce more aggressive sustainability measures to combat climate change. For example, most cloud service providers have announced significant climate pledges to either reduce or offset their carbon emissions. But these initiatives can only go far to move the needle—it’s up to individual companies and departments to participate in curbing their climate impact, and DevOps certainly has a role to play in enacting positive change.
One way to design for sustainability is to optimize information technology systems to reduce waste. Enterprise IT typically supports a lot of unnecessary technical debt and perpetuates toilsome tasks that contribute to energy inefficiencies. Removing unused instances and features or idle workloads that aren’t contributing value could be an easy way to reduce waste. Yet other optimizations will require more effort.
I recently chatted with André Christ, co-founder and CEO of LeanIX, to discover what techniques enterprise-level software architects can use to get the most out of their technology modernization efforts while leaving the least carbon footprint. According to Christ, optimizing existing processes, using cloud-native technologies and leveraging value stream management are some tactics architects can take to “do more with less.”
1. Match Technology to Sustainability Targets
First, technology leaders must understand the capabilities of their business that could help contribute to meeting sustainability targets. “This requires understanding and systematic mapping,” said Christ. “It’s really about understanding what you can do as a company to contribute to sustainability in a more holistic way.”
For example, a routing and logistics provider might optimize operations by redesigning its floor plan to maximize efficiency and reduce energy use. Similarly, Christ recommended software professionals take stock of their existing capabilities to determine what should change. This could equate to discovering internal microservices that aid one department and extending them across the entire organization.
Optimizing data transfers is another way to create a leaner IT system. For example, teams could reduce constant polling by eliminating overfetching and underfetching or embracing a new API standard, like GraphQL, said Christ. Cutting out these superfluous calls reduces unneeded energy consumption.
2. Ensure Cloud-Architected, Not Lift-and-Shifted
Cloud migrations can reap significant benefits in terms of scalability and flexibility. But not every cloud migration delivers tangible sustainability benefits. AWS identified six unique strategies for migrating applications into the cloud: Rehosting (known as lift-and-shift), replatforming, repurchasing, refactoring, retiring and retaining. While early gains may be met simply by rehosting applications, replatforming or refactoring them completely with cloud-native components will likely deliver the best optimizations.
“If you only lift-and-shift applications into the cloud, they will keep running just as inefficiently as a virtual machine,” said Christ. Therefore, architects should design for cloud-native whenever possible rather than simply porting legacy applications to the cloud. On the other hand, it may be prudent to replace specific legacy components with SaaS or retire them altogether. As such, it’s crucial to analyze your existing landscape before making a cloud migration to ensure changes are both cost-effective and advancing sustainability goals.
3. Practice Value Stream Management
Practicing value stream management is another potential strategy to cut bloat by ensuring product teams always create more value for the end customer. Planview defined value stream management as such:
“Value Stream Management is a management technique or practice that focuses on increasing the flow of business value from customer request to customer delivery.”
This frame of mind could help engineers make more streamlined decisions about what they’re creating. But to achieve value stream management, organizations will require enhanced visibility into how individual services perform, their dependencies under the hood and their approximate emissions.
The core question you should be asking product teams, said Christ, is how carbon-efficiently are you operating in relation to the number of users you are serving? The answers will highlight which aspects of the business require the most optimization.
4. Tie Sustainability to the Business Bottom Line
Many sustainability pledges are founded on carbon offsetting, in which the company purchases “offsets” of its emissions, usually by planting trees or preserving forests. But, the practice of carbon offsetting has received criticism as being ineffective at stemming rising global temperature levels. So what does an honest climate pledge look like that’s more than greenwash? Well, perhaps one more closely associated with the bottom line.
Taking the idea of value stream management one step further, Christ argued that a real climate pledge would involve reducing carbon footprint by a certain percentage for each new dollar generated. As a business scales and its revenue increases, it should constantly reduce emissions in parallel with this growth. This would equate to assigning a dollar value for every CO2 ton and putting it into the balance sheet, said Christ.
Doing More With Less
Nations are striving to reduce carbon emissions through sweeping legislation. Yet, national goals will be insufficient to meet the target decline of 43% percent by 2030 and net zero by 2050, the United Nations reported. Thus, it will take effort from the private sector, as well.
We’ve identified some steps above to do more with less, yet many current, unsustainable practices are culturally ingrained, making them challenging to change. It will be the work of enterprise software architects to break it down and apply smarter designs to cloud-native applications. This will likely require centralizing views of internal services to enhance visibility and reporting. “You need good visibility into what you’re building and what it’s composed of to reduce the footprint,” said Christ.
