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@@ -294,7 +294,7 @@ Different phases of a project have different characteristics. They need to overl
![[Pasted image 20250108151953.png]]
#### Project Flow
Staged delivery!
**Staged delivery!**
We want to ship staged versions of the software continuously in order to deliver something that works and improve upon it (ideally with more user feedback).
Each stage is released after detailed design, coding, debugging and thorough testing.
##### Benefits of Staged Delivery
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4. Status-reporting overhead is reduced:
Shipped and working software is a more accurate status report than a paper report.
5. Makes More Options Available: you have releasable software at all times, meaning if you want to release something is is much less work than if you don't
6. Reduces possibility of estimation error
6. Reduces possibility of estimation error: each delivery is a syncronizing event because you can compare the estimates with what is delivered and improve your estimation skills.
7. Balances Flexibility and Efficiency: It avoids a situation like [[analysis paralysis]], because you can ship a small stage efficiently.
##### Cost of Staged Delivery
- You need to retest software at every stage
- You need to execute merging and other version control tasks
- You need to manage different versions
- You need to plan the staged deliveries
Some of those costs are just exposed earlier in the process and would remain hidden (but still exist) otherwise.
#### Project Phases
The phases described above slightly overlap, which is inevitable and desirable.
![[Pasted image 20250108155841.png]]
##### Distribution of Effort
![[Pasted image 20250108160138.png]]
![[Pasted image 20250108160308.png]]
Note that e.g. requirements development requires 12% of the time, but only 6% of the effort, because it is less tangible and requires deeper contemplation such that it is done at a slower pace. This also means that it doesn't produce a lot of code.
##### Milestones and Deliverables
Use lists from book pages 65ff.
> [!question] Survival Check - Successful Project at a Glance
> - 👍🏼 Project uses a staged delivery approach
> - 👍🏼 Upper management, customer or both track progress by code growth curve
> - 👍🏼 Upper management, customer or both track progress by keeping tabs on major milestones and deliverables
### Hitting a moving target
#### Change Control
---
```query
Software Project Survival Guide Steve McConnell