上了雲端、如何回到地面呢？
瞧這標題、
「上了雲端、如何回到地面呢？」
https://www.techrepublic.com/article/how-to-escape-the-cloud/
A) 難道這一波雲計算熱潮過了？(no obvious trending yet)
B) 或許是有些公司已經吃了悶虧？(若真的吃了悶虧、恐怕也不想張揚 ...:))
C) 作為任何一個公司管理階層、最起碼的棋盤推演 (what-if scenario) 是必須的、can you afford putting all eggs in one basket?
Then ....開始有人琢磨計算:
1-- 算一算究竟省錢省了多少？(Although saving in hardware cost, and yet you may lose SW discount from existing vendor; e.g., Database vendor (Oracle DB)??, how many EC2 + Storage + CloudFront + Load-Balancing + 數據流量 per GB charges + etc do you need? )
2-- '當機' 時數/頻率 高不高？
當初 簽約的條文 是否納入 '當機' 賠償金額約定？
3-- 值不值得 ROI?? (投資-風險評估)
4-- 「安全考量/抗駭強度」評估有多大？
5-- Train up new in-house expert employees？現有員工之再訓練？或是乾脆一刀切 (Layoff)舊員工/元老、再另外招募(雲技術)人才？any disruption in existing operation??
再如何火紅滾熱的經濟引擎、總會有熄火冷卻的時候；
想一想 -- 地球之"地心引力"、
what goes up, one day it will come down?!! And the higher it goes, the harder it will crash?!
We shall see in 2020?! :)))
Similar reasons outlined below:
- The cost savings aren't what the service provider promised;
- There's too much downtime;
- The latency is too slow for your application;
- Your budget changed from being operations-centric to capital-centric;
- A security concern;
posted by SasaSam @ 8:40 PM
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