Software-as-a-Service (SaaS)小小研究心得

wikipedia上的解釋

SaaS 有兩種

-ASP (application service provider)
-Software on Demand

＊前者：client買好軟體(先付軟體費給isv) 然後拿去給 hosting provider 放上線(付hosting 跟 bandwidth 錢)

＊後者：isv開發好軟體，通常是一對多的架構，同時提供 使用權 與 hosting 服務，因此client付費給同一個人。

ASP versus SaaS

來自 wikipedia 的解釋

The reason for moving away from the term ASP or Application service provider is that the ASP generation was merely traditional client-server applications with HTML frontends added as an afterthought. These applications were hosted by third-parties who ordinarily did not have application expertise, but were managed servers. Because the applications were not written as net-native applications, performance was poor and application updates were no better than self managed applications. By comparison, current net-native SaaS applications or independent portions are updated regularly, many daily.

SaaS links

Breeze
yap, Breeze也是 SaaS的一種，它完全符合上述對 SaaS 型態的描述，在合併後的adobe內甚至有一個事業群是專門在經營這塊，目前 breeze 等hosted software service是 Sean Corfield 在掌管。

Basecamp
一個小型專案管理系統，php/mysql架構，風評不錯，但顯然可改進空間頗多。

Salesforce
傳統老牌名店，最近規模越長越大也開始出現模組化架構，可以讓3rd party自已寫app然後掛進去那個platform 販售，頗有從 SaaS 變型為 platform channel 的架勢。