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content/notes/25-cost-benefit-analysis.md
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@ -16,7 +16,7 @@ sr-ease: 270
- funds - funds
- strong will - strong will
# deciding whether to pursue a project ## deciding whether to pursue a project
- what the project address - what the project address
- a problem - a problem
- opportunity - opportunity
@ -25,10 +25,10 @@ sr-ease: 270
- overall priority - overall priority
- what options do you have - what options do you have
# Case study ## Case study
![library web system](https://i.imgur.com/KXOOiQ9.png) ![library web system](https://i.imgur.com/KXOOiQ9.png)
# Feasability analysis ## Feasability analysis
- should we build it (organisational) - should we build it (organisational)
- nature and strength of need - nature and strength of need
- strategic alignment? overall priority? - strategic alignment? overall priority?
@ -74,7 +74,7 @@ benefits
- market share - market share
- improved perception of company "cool", happier staff - improved perception of company "cool", happier staff
# quantify ## quantify
dollar values. usually estimates/guesse dollar values. usually estimates/guesse
e.g., e.g.,
@ -84,7 +84,7 @@ e.g.,
- smarter student management system with better prerequisite, modelling: how to estimate benefit - smarter student management system with better prerequisite, modelling: how to estimate benefit
- these are tangible benefits, intangible benefits are harder - these are tangible benefits, intangible benefits are harder
# assess economic value ## assess economic value
- payback period - how long until accumulated benefits equal the cost - payback period - how long until accumulated benefits equal the cost
- NPV: sum of costs and benefits , but future years discouted - NPV: sum of costs and benefits , but future years discouted
- ![example](https://i.imgur.com/W6lhzKb.png) - ![example](https://i.imgur.com/W6lhzKb.png)
@ -93,7 +93,7 @@ e.g.,
- ![](https://i.imgur.com/puvRpYm.png) - ![](https://i.imgur.com/puvRpYm.png)
- ![](https://i.imgur.com/19rMyQa.png) - ![](https://i.imgur.com/19rMyQa.png)
# Example: what is better ## Example: what is better
- ![](https://i.imgur.com/nxMstV5.png) - ![](https://i.imgur.com/nxMstV5.png)
- financial analysis isn't everything - financial analysis isn't everything
- possible reasons to ignore a financial analysis - possible reasons to ignore a financial analysis
@ -102,7 +102,7 @@ e.g.,
- legal risk - legal risk
- reputational risk - reputational risk
# Comparing methods ## Comparing methods
- payback: ignores discounting; gives a *year* - payback: ignores discounting; gives a *year*
- NPV considers discounting, give *net benefit* in financial terms, but ignores time and amount invested - NPV considers discounting, give *net benefit* in financial terms, but ignores time and amount invested
- ROI considers discounting and amount invested, but ignored time period; gives a *percentage* - ROI considers discounting and amount invested, but ignored time period; gives a *percentage*

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content/notes/review-i201.md
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@ -95,25 +95,25 @@ tags:
[08-business-patterns](notes/08-business-patterns.md) [08-business-patterns](notes/08-business-patterns.md)
- monolithic vs client/server vs distributed (services) [Monolithic architecture](notes/software-architectures.md#Monolithic%20architecture) - monolithic vs client/server vs distributed (services) [Monolithic architecture](notes/software-architectures.md#Monolithic%20architecture)
- separation of reponsilbilities [Separation of reponsibilities](notes/software-architectures.md#Separation%20of%20reponsibilities) - separation of reponsilbilities [Separation of reponsibilities](notes/software-architectures.md#Separation%20of%20reponsibilities)
- "standard patters" of design (recognise) [[s]] - "standard patters" of design (recognise) [Generic old info sys architecture](notes/software-architectures.md#Generic%20old%20info%20sys%20architecture)
- sysstem templates - sysstem templates [system-templates](notes/system-templates.md)
# performance and security # performance and security
- performance requirements - performance requirements [Performance requirements](notes/22-performance-and-security.md#Performance%20requirements)
- how to quantify and measure - how to quantify and measure
- response time, workload, scalability - response time, workload, scalability
- caching pooling - caching pooling
- system reliability - system reliability
- security and integrity requirements - security and integrity requirements [Integity and securuty controls](notes/22-performance-and-security.md#Integity%20and%20securuty%20controls)
- consider throughout development - consider throughout development
- authentication and authorisation - authentication and authorisation
- principle of least privilege - principle of least privilege
# cost benefit analysis # cost benefit analysis
- project feasbility - project feasbility [justifying a project](notes/25-cost-benefit-analysis.md#justifying%20a%20project)
- need, funding, strong will - need, funding, strong will
- duration, priority, rick, uncertainty - duration, priority, rick, uncertainty
- should we, can we, is it worth it? - should we, can we, is it worth it?
- economic feasibility: - economic feasibility: [costs and benefits](notes/25-cost-benefit-analysis.md#costs%20and%20benefits)
- costs vs benefits (tangigble/intangible) - costs vs benefits (tangigble/intangible)
- payback time (break even), NPV, ROI - payback time (break even), NPV, ROI