How to code your way to manageable cloud costs

Date:
Tue, 23 Apr 2024 14:25:04 +0000

Description:
Making cost-conscious coding a priority can significantly impact the bottom line by effectively managing cloud expenditures.

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Global spending on public cloud services is set to increase by a sizeable 20.4% in 2024, according to Gartner, with much of the cost directly related
to increased utilisation. This wont be a surprise for anyone managing an IT budget and finding theyre attributing more money to keeping cloud services online.

Theyre not without solutions though. The big players are all introducing
cloud pricing calculators, while FinOps is gaining attention among those taming runaway costs. But heres the issue: although cloud calculators and FinOps can be helpful for addressing infrastructure, they dont go far enough in tackling the applications . As such, IT teams using these tools are still unable to focus on the key contributor of cloud costs inefficient code.

A simple way to look at it is that cloud is an extension of your code, and because inefficient code in the cloud makes you fork out large amounts of money straightaway, turning the tide should be a priority. Cloud changes the planning cycle

With on-premise infrastructure setups, managing utilization would usually
mean looking at the code that lives directly on the server . The more data
and features you add, the faster you get to around the 70-80% usage amount the point at which many IT managers start to think about adding more server capacity.

However, purchasing, provisioning and connecting a server in an on-premise data centre can take up to six months. It isnt an overnight job. So, in the meantime, teams might try to make tweaks to the existing servers to reduce usage, boost performance, and give some breathing room until the new hardware is online.

When deploying code in the cloud, its very different. Thats because the
clouds ability to automatically scale means you never get to the 70 or 80% capacity level. And because the meticulous level of expansion planning isnt required in the same way as in an on-premise situation, the impetus to tweak and enhance your code to gain more headroom isnt as great.

Where you might have worked hard to regain 20-30% of capacity on premise,
that procedure never happens in the cloud. As such, your cloud services bill gets higher and higher. The case for cost SLOs

All this requires us to rethink the way we approach the cloud, code and
costs. The common misconception is that cloud is infrastructure when in fact its code. And not enough developers think about how much their code costs in production. Usually, they will prioritize the parameters that exist in
service level objectives (SLOs) such as CPU and memory consumption, latency, and response times. Usually, cost isnt regarded as an SLO. I would argue that has to change.

If cost is set as a deliverable from the very beginning, it sets the tone for optimisations that will make cloud costs more affordable while also
unlocking other benefits at the same time. Every execution adds a cost, but what if those costs could be minimised? For example, lets say an online transaction usually takes two seconds to complete. If you could introduce a line of code that could reduce that two seconds down to 500 milliseconds, you can save 75% while also improving customer satisfaction.

Its a phenomenon called cost-conscious coding and it couldnt come to prominence at a better time. While cloud costs increase, AI is becoming more capable, helping developers create code faster than before. According to McKinsey, AI can cut the time it takes to write new code in half. Therefore, it will be possible to become more efficient and cost effective with code rendered in the cloud, while the people hours to create the code in the first place will be heavily reduced. Make cost-conscious coding make sense

If you want to manage your cost as an SLO, a good place to start is by defining, measuring, calibrating, and recalibrating it. What do you want the parameters to be and how will you track progress? Cost-conscious coding is an iterative process so you will continually discover new ways to improve performance.

That said, its also worth noting that your returns will ultimately stabilize. There will be a point when the law of diminishing returns kicks in, and results will also vary from business to business. Cost-conscious coding therefore should be aware of the effort being put in and the expected outcomes. The results should always justify the initial effort or it will be
a wasted exercise, no matter how much AI helped write the code.

If youve noticed your cloud costs ballooning recently, cost-conscious coding is definitely worth exploring. It sits well within the broader philosophy of setting cost as an SLO and when theres such an expectation in place, its much more likely that developers will start to address it. Even if your costs
arent going up now, if youre planning to grow, theres a likelihood that they will at some point. Cost-conscious coding is an activity that prepares for
the future and can potentially use emerging technologies to make it happen.

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