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Sixteen AWS launches from October 14 to 27, 2026, ranked by what they change on the bill. ECS Gateway still leads (~$394/mo less for 25 services in us-east-1). ECS GPU sharing and GPT-6.1 Terra come next. Five of the sixteen are not cost cuts.
RDS performance: gp3 IOPS, Performance Insights / Database Insights, Proxy, replicas, ElastiCache. July 2026 tuning checklist.
Palaniappan PSavings Plans and Reserved Instances reduce the rate you pay. Architecture determines the volume you pay at. The most durable cost reductions in AWS come from designing systems that generate less spend, and negotiating a lower price for the same behavior does not achieve that.
Kevin W.A B2B SaaS stack that costs $500/month at launch does not need to cost $50,000/month at 100,000 users if the architecture decisions at each stage are deliberate. This is the end-to-end reference architecture with real cost numbers.
Palaniappan PValkey on ElastiCache: about 20% node / 33% serverless cheaper than Redis OSS engines. July 2026: sessions, rate limits, locks, migration checklist.
Palaniappan PRedis is fast, until your application retries on every cache miss and the Redis bill starts looking like the database bill. ElastiCache patterns, data structures, cluster modes, eviction policies, and the production patterns that actually reduce database load.
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