Cost Optimization Tips
成本優化提示
Reduce your cloud spending by up to 40% with these proven, practical strategies — without sacrificing performance or security.
透過這些經過驗證且切實可行的策略，將雲端開支減少高達 40%——而不犧牲效能或安全。
Cloud waste is widespread. Most organizations overspend on resources they provisioned once and then forgot — oversized instances, idle capacity, and unnecessary data transfers. The good news is that most of this waste is avoidable. The strategies below reflect what we see working consistently across Hong Kong businesses using Hong Kong Info Cloud, and they all share one principle: align what you pay with what you actually use.
雲端浪費十分普遍。大多數機構都在為自己一次性配置後便忘掉的資源超支——過大的實例、空轉的容量，以及多餘的數據傳輸。好消息是，這些浪費大部分都可以避免。以下策略反映了我們在香港資訊雲的客戶身上一再驗證有效的做法，而它們都遵循同一原則：讓您的付出與實際的使用對齊。
Typical savings after right-sizing / 調整規模後典型節省
Average saving from reserved capacity / 預留容量平均節省
Time for a first cost audit / 首次成本審計所需時間
Tip 1Right-Size Your Resources
技巧一：調整資源規模
The single biggest source of cloud waste is over-provisioning. Teams often size instances for the busiest day of the year and leave them running at that size forever. Review actual CPU, memory, and storage utilization across your workloads, then downsize instances that consistently run below 40% utilization. Repeat this review every quarter; data changes, and so should your resource sizes.
雲端浪費的最大來源就是過度配置。團隊常常按照一年中最繁忙的一天來設定實例大小，然後讓它以那個規模永遠運行。檢視您各項工作負載的實際 CPU、記憶體和儲存使用率，然後縮小持續低於 40% 使用率的實例。每季重複一次這項檢視；數據會變化，資源規模也應該跟著調整。
Tip 2Use Storage Tiers Wisely
技巧二：善用儲存層級
Not all data needs hot storage. Hot data that is accessed frequently belongs on fast, SSD-backed tiers; warm data that is rarely touched can move to lower-cost standard tiers; and archives that must simply be retained can live on the most affordable cold or archive tiers. Set lifecycle policies to move data automatically between tiers based on age and access patterns, and you will pay for performance only where you actually need it.
並非所有數據都需要熱儲存。頻繁存取的熱數據應放在高速的 SSD 儲存層；很少觸及的溫數據可以移到成本更低的標準層；而只需留存歸檔的數據則可放在最划算的冷儲存或歸檔層。設定生命週期政策，根據數據年齡和存取模式自動在不同儲存層之間移動數據，這樣您就只為真正需要的效能付費。
Tip 3Commit Where It Makes Sense
技巧三：在合適處承諾用量
For steady, predictable workloads, committed-use plans or reserved capacity typically offer savings of 30% or more compared with on-demand pricing. Only commit to capacity you are confident you will keep using for the full term, and leave a buffer of on-demand capacity for variable or unpredictable traffic. Combine reserved capacity for your baseline and on-demand for your peaks.
對於穩定、可預測的工作負載，承諾用量計劃或預留容量通常比按需計價節省 30% 或以上。只對您有信心在整個期間內持續使用的容量作出承諾，並為變動或不可預測的流量保留一部分按需容量。以預留容量支撐基線需求，以按需容量應對尖峰。
Tip 4Automate Off-Peak Shutdown
技巧四：自動化離峰關閉
Development, staging, and test environments frequently run around the clock even though nobody uses them outside business hours. Use scheduling or auto-scaling policies to stop non-production workloads at night and on weekends, and to scale down to a minimum during quieter periods. A two-thirds reduction in running hours translates directly into a two-thirds reduction in cost for those environments.
開發、預演和測試環境常常 24 小時運行，即使在非辦公時間無人使用。使用排程或自動擴展政策，在夜間和週末停止非生產工作負載，並在相對安靜的時段縮減至最低規模。運行時數減少三分之二，直接轉化為這些環境成本減少三分之二。
Tip 5Monitor Data Egress
技巧五：監控數據出口流量
Data transfer costs are one of the least visible items on a cloud bill. Keep the majority of traffic inside the same data center or region, where inter-service transfers are free or far cheaper. Monitor egress volumes against your plan, cache static content at the edge with a CDN to reduce origin transfers, and compress large payloads before movement. Small changes in traffic patterns can mean significant savings.
數據傳輸費用是雲端帳單上最不顯眼的項目之一。讓大部分流量留在同一個數據中心或區域內，因為服務之間的傳輸通常是免費或便宜得多。對照計劃監控出口流量，使用 CDN 在邊緣快取靜態內容以減少源站傳輸，並在傳輸前壓縮大型數據。流量模式的微小改變，往往意味著可觀的節省。
Tip 6Adopt FinOps Practices
技巧六：採用 FinOps 實務
Cost optimization is a cultural practice, not a one-off project. Tag every resource with owner, environment, and project so costs are transparent and attributable. Set budgets and anomaly alerts so unexpected spikes are caught early. Hold regular cost reviews where engineering and finance sit together and act on findings. When everyone can see the bill, everyone helps control it.
成本優化是一種文化實務，而非一次性專案。為每個資源標記負責人、環境和專案，讓成本透明且可歸屬。設定預算與異常告警，及早發現出乎意料的費用飆升。定期召開成本檢討會議，讓工程與財務團隊共同參與並就發現採取行動。當每個人都能看到帳單時，每個人都會協助控制它。
Where to start: Begin with a one-hour cost audit of your highest-spend services, then apply right-sizing first. It delivers the fastest, most visible return.
從何開始：先從花費最高的服務進行一小時的成本審計開始，然後優先進行資源調整。它帶來最快、最明顯的回報。
Your 30-Day Action Plan
您的 30 天行動計劃
- Week 1: Run a baseline audit and tag all resources 第一週：進行基線審計並為所有資源加上標記
- Week 2: Right-size the top 10 highest-spend workloads 第二週：調整前十大支出最高的工作負載規模
- Week 3: Configure storage tiering and lifecycle policies 第三週：配置儲存分層與生命週期政策
- Week 4: Automate off-peak shutdowns and set budgets with alerts 第四週：自動化離峰關閉，並設定預算與告警