On Aug 6, 2026 AgentCore Runtime Instances went GA — EC2-backed agents with sessions up to 14 days vs 8-hour microVM Runtime. Field guide: capacity providers, GPU fit, and when idle EC2 burns more than serverless.
Compute Optimizer added 32-day lookback for cyclic workloads in 2025 — critical for monthly batch jobs that looked oversized on 14-day windows. In a June 2026 audit of a $48k/mo account, rightsizing recommendations alone modeled $11k/mo savings at low performance risk.
Two goroutines updating adjacent counters can saturate memory bus on a c7g.8xlarge. Memory barriers, cache lines, and false sharing—why placement groups do not fix application-level contention.
C10k is solved until syscall overhead and context switches eat your Graviton cores. epoll, sendfile, and SO_REUSEPORT behaviors on EC2—and why Lambda caps concurrency differently.
On June 10, 2026 AWS GA’d M9g/M9gd on Graviton5 — up to 25% more compute vs M8g, 35% faster for web and ML per AWS. Field guide: M9g vs M9gd, canary checklist, RI traps, and agentic-AI fit. Compute-optimized sibling C9g/C9gd GA June 30.
Most "RI vs Savings Plan" content treats them as peers. In mid-2026 they are not. A 3-year All-Upfront Compute Savings Plan saves a composite ~$60k/mo SaaS roughly $864k over 3 years vs a 1-year No-Upfront plan—but breaks even at ~22 months and locks instance-family flexibility. Buy the wrong commitment and a Graviton migration strands the discount. Here is the decision tree we use.
Cheapest Spot pool is often the unstable one. July 2026: price-capacity-optimized + attribute-based selection, stability scoring, interruption hygiene — before you chase $/hr.
AWS Graviton processors deliver 20-40% cost savings and better performance-per-watt. Complete guide: migration path, performance benchmarks, and production deployment patterns.
Anonymized Series A SaaS bill: ~$40k/month for ~$8–9k of real work. July 2026 refresh — free S3/DynamoDB gateway endpoints, EBS zombies, RDS rightsizing, Trusted Advisor on Business Support+.
Autoscaling surprise bills are pattern-shaped: asymmetric thresholds, bad metrics, Lambda duration, Spot storms. July 2026 refresh — target tracking, Budget Actions, FinOps Agent.
AWS publishes every price publicly, yet bills still surprise teams in 2026. Costs emerge from service interactions — now including Bedrock/AgentCore — not from any single rate card.
A technical deep dive into EC2 performance optimization for API workloads — covering instance family selection, Graviton vs x86 economics, network tuning, EBS configuration, and Linux kernel parameters that directly impact throughput and tail latency.
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