AI inference just plays by different rules

Why no cloud storage architecture was designed for what agentic AI is about to demand

Partner Content Nvidia CEO Jensen Huang recently declared that we are entering the era of "AI factories," where the primary output of the global tech economy isn't software, it's intelligence. He's right. But while the world is obsessing over GPU clusters and trillion-parameter models, a massive, silent crisis is brewing further down the stack in your AWS, Azure and Google Cloud environments.

AI agents are coming for your data infrastructure. And they are going to overwhelm your underlying storage and data access layers.

We are standing at the edge of an AI Data Tsunami. The shift from simple chatbots to autonomous, multi-step AI agents means that inference is no longer a stateless, compute-only problem. It is a massive, unpredictable, and unprecedented data problem. Underlying data infrastructure built for human-speed applications will be unprepared for what happens next.

Here is the brutal truth about moving AI from a cute proof-of-concept to enterprise-grade production in the public cloud.

Inference is OLTP++: Plan for unprecedented concurrency

For the last 20 years, we've tuned data systems and storage layers for human behavior. Humans are slow. They click a button, wait for a page to load, read the screen, and maybe click again 30 seconds later. Even at high scale, human traffic follows predictable diurnal patterns. You can cache it and average it out.

Conversely, AI agents do not sip coffee or take time to read.

When an autonomous agent executes a ReAct (Reasoning and Acting) loop, it fires off a query, ingests the context, realizes it needs more information, and fires off three more queries in parallel, all within milliseconds. Now multiply that by thousands of concurrent agents operating across your EC2 fleet.

Our customers are seeing firsthand that AI inference behaves like OLTP++. It exhibits unprecedented concurrency, massive read spikes, and unpredictable access patterns. If you are capacity planning based on management-friendly averages in CloudWatch and historical CPU utilization, you are flying blind. You must architect for sudden, extreme spikes in I/O demand, because in the agentic era, peak load is the only load that matters.

Vector DBs & RAG: Design the data path, not just the prompt

Right now, the AI ecosystem is obsessed with prompt engineering and model fine-tuning. But when you move a Retrieval-Augmented Generation (RAG) application from a local Jupyter notebook into an AWS production environment, you quickly discover a harsh reality: The bottleneck isn't Python. It isn't the LLM.

The bottlenecks are how data is stored, accessed, and moved across the underlying storage layer – including index scans, embedding fetches, and scatter-gather latency.

When you execute a vector similarity search like Hierarchical Navigable Small World (HNSW) or Inverted File with Flat quantization (IVFFlat) combined with relational metadata filtering, you are forcing the data access layer to perform highly complex, memory-intensive operations. For AWS-hosted stacks, you need to aim for sub-millisecond reads on hot vectors and predictable throughput as your datasets grow to hundreds of millions of rows.

Too many engineering teams treat AWS Relational Database Service (RDS) to read replicas as their primary scaling strategy. Let's be clear: Replicas are a last resort, not a strategy. More importantly, scaling the database tier without addressing the underlying storage and data access layer simply shifts the bottleneck, rather than removing it. If your architectural plan boils down to "add more readers and pray," you are exactly one traffic peak away from a catastrophic post-mortem.

You need to unlock AI innovation by boosting existing apps with risk-free vector search. That requires designing a data path that can handle the physics of high-dimensional math without falling over.

The AWS EBS reality check

AWS is a phenomenal platform, and Elastic Block Store (EBS) is the workhorse of the modern cloud. But EBS is bound by the laws of physics and the laws of cloud economics.

EBS volumes rely on burst buckets and strict per-volume IOPS and throughput caps. These mechanisms exist to protect the multi-tenant cloud environment, and they do not care about your application SLA.

When an AI agent goes rogue or a sudden surge of inference traffic hits your data layer, it will chew through your EBS burst credits in minutes. Once that bucket is empty, your storage performance falls off a cliff. Latency spikes from one millisecond to 50 milliseconds. Your applications stall waiting on storage. Your application servers run out of worker threads. The entire stack locks up.

You cannot solve this by simply sliding a slider to provision more IOPS. At a certain point, you hit hard limits on what a single EC2 instance and its attached storage can physically push.

Decoupling from AWS storage limits

Even if AWS is your permanent home base, AI inference is reshaping the demand on enterprise architectures. Inference workloads demand extreme performance, and if your data architecture is tightly coupled to the hard limits of native EBS SKUs, you are trapped.

To get out of this trap, you need a software-defined storage abstraction that sits on top of AWS infrastructure, buying you massive leverage. By decoupling your application and data performance from native AWS storage limits, you protect your applications against EC2 capacity crunches, IOPS price spikes, and instance-type lock-in.

The only KPI that matters: p99/p999 under mixed load

Stop looking at average latency. Averages are lies we tell ourselves – and our leadership - to feel better about our infrastructure.

Users and AI agents feel the outliers. A two-millisecond average latency means nothing if one percent of your queries take three seconds and block an entire agentic reasoning chain. You must make tail latency (p99 and p999) a hard release blocker.

You need to track tail latency where things go wrong – especially in the storage and data access layer. Benchmarking an idle system is useless. You need to measure p99 under real-world, high-stress conditions:

• Concurrent OLTP + inference + maintenance jobs: What happens to your vector search when a massive batch update or vacuum process kicks off?
• AZ-to-AZ variability: How does latency degrade during failover events or when AWS shifts your placement groups?
• Autoscaling events and cache warm-ups: When a new EC2 node spins up, how long does it take for the cache to warm, and how much does the storage layer suffer in the meantime?

If your platform cannot keep the tail tight under these mixed-load conditions, it is not production-ready for inference no matter how good the demo looked on stage.

A customer nightmare: The success disaster

Let's look at a scenario that is playing out across the industry right now. We'll call the company involved "FinRetail," a massive e-commerce platform with embedded fintech.

FinRetail built a brilliant AI shopping assistant. It used RAG to cross-reference user purchase history, real-time inventory, and live pricing data. The proof of concept was flawless. The board was thrilled. They launched it on a Tuesday.

By Tuesday afternoon, it was experiencing a "success disaster." The AI agents were too thorough. To answer a simple question like, "What's the best laptop for a college student under $1,000?" The agents were executing 40-step reasoning loops, firing hundreds of vector similarity searches against their PostgreSQL database, while simultaneously checking real-time inventory levels.

The concurrency was unprecedented. Within 15 minutes, FinRetail exhausted its EBS burst credits, read latency spiked from 0.8 ms to 120 ms. The system became saturated, just trying to manage the I/O wait states. The entire site went down, taking the core revenue-generating OLTP systems with it.

They tried to add read replicas, but the underlying storage constraints remained, and the AI agents started hallucinating based on stale inventory data, recommending products that had sold out hours ago. It was a total post-mortem scenario, caused entirely by a storage layer that couldn't handle modern inference workloads.

How Silk solves this risk differently

You cannot solve the AI data problem by throwing more managed disks at it. You need a fundamental architectural shift. You need to decouple performance from capacity.

This is exactly what Silk does. Silk is a software-defined cloud storage that sits between your EC2 compute and your underlying infrastructure. It accelerates the performance of multiple underlying cloud resources and presents them as a single, impossibly fast, highly resilient data layer.

When we say fast, we aren't talking about marginal improvements. We are talking about pushing the absolute limits of cloud physics. Recently, database expert Tanel Poder put Silk to the test to see exactly what it could handle. The results were staggering, delivering 20 GiB/s of I/O throughput.

With Silk, you aren't bound by the IOPS caps of a single EBS volume. Silk's symmetric active-active architecture and massive distributed caching layer absorb the unprecedented concurrency of AI inference. It serves hot vectors directly from memory, delivering consistent, sub-millisecond p99 latency even when you are running heavy OLTP workloads and maintenance jobs simultaneously.

We are proving this across the most demanding data-intensive applications in the world. Whether you are pushing the limits of high-performance AI vector search with Postgres on Silk or scaling Postgres AI workloads even further with Google AlloyDB, the result is the same: Enterprise-grade predictability at extreme scale.

Silk eliminates the need to overprovision EC2 compute just to get more storage performance. It eliminates the need to rely on fragile read replicas for your core data path. It gives you the freedom to run your AI workloads on AWS with the exact same enterprise data services and performance guarantees.

Stop praying and start engineering

The AI inference tsunami is already here. The systems that survive it will be the ones built on modern, software-defined cloud storage architectures designed for violent concurrency, massive throughput, and uncompromising tail latency.

Don't wait for your own "success disaster" to realize your AWS storage is the bottleneck. It's time to look under the hood and see what an AI-ready data platform looks like.

Ready to see the proof? Hear from Eduardo Kassner, chief data & AI officer at Microsoft, and Tom O'Neill, VP of product at Silk, on why AI inference is reshaping system behaviors and why the solution isn't simply adding replicas, adopting new storage systems, or rewriting applications.

Watch the webinar now: AI Inference Didn’t Break Your Architecture - It Reveals What Comes Next.

Contributed by Silk.