AWS 使用按使用量付费定价模式 — 您只需为实际使用的资源付费,大多数服务无需前期承诺。理解定价模式、常见成本因素以及如何控制成本是重要的实际知识(云账单可能会让您吃惊)。
按使用量付费模式
Most AWS services charge based on USAGE, with no upfront cost:
→ COMPUTE — per second/hour an instance runs (EC2), or per request/duration (Lambda)
→ STORAGE — per GB stored per month (S3, EBS)
→ DATA TRANSFER — often charged for data OUT to the internet (a common surprise!)
→ REQUESTS/operations — per API call, per request (S3, DynamoDB, Lambda)
→ Pay for what you use; scale cost with usage.
免费层(用于学习)
AWS FREE TIER lets you try services free (great for learning):
→ ALWAYS FREE — some services have a perpetual free allowance (e.g. Lambda requests)
→ 12 MONTHS FREE — some free for a year for new accounts (e.g. 750 hrs/mo t2.micro EC2)
→ TRIALS — short-term free trials of some services
⚠️ Exceeding free-tier limits incurs charges — monitor usage!
