Who Ate My Buffer

Who Ate My Buffer Aviram Eisenberg

SW Development Project Statistics
What is the percentage of SW development projects that fail to meet the deadline?
More than 60%!

The hectic world of fixed bids
We live (or die) by our estimates
One under estimate can eliminate the profit of five past projects
Same resources are working on several projects in parallel – Fire extinguish mode
New change requests are coming from the customer as the project reaches intermediate deliveries

Multi dimension problem
Need to meet customer due dates
Time buffer
Need to maximize resource utilization
Resource buffer
Need to be profitable
Cost buffer

Case Study - Planned Milestone 1 Milestone 2 Buff1 Buff2 T1 T2 T3 T4 T1 T2 T3 T4 Overall Project Buff3 Planned Cost Buff

Case Study - Actual Milestone 1 Milestone 2 Buff1 Buff2 T1 T2 T3 T4 T1 T2 T3 T4 T5 T6 Overall Project Buff3 Planned Cost Buff

Who Ate My Buffer???
Reminder: this is the scenario of successful project!
When all buffers are consumed an endless conflict of change vs. bug starts
This is the unsolved problem of fixed bids: How to finish a fixed priced project with win-win feeling

Something is missing…
Time & Materials/Cost +
Low margin for the provider
High risk for the customer
High overhead for the customer
Due dates and budget are always missed
Fixed bids
High risk for the provider
Low certainty for the provider
High price for the customer
Lack of transparency to the customer
The endless argument of change vs. bug

The clear box model
Customer pay per resource profile
Long term engagement
Series of projects
Define a cap for each project
Time cap
Budget cap
Utilize Agile methodology
Short delivery cycles
Working software
Manage features and not tasks

Q&A
Aviram Eisenberg
Ignite
[email_address]
+972 52 6005161

Who Ate My Buffer

by Aviram Eisenberg on Dec 14, 2008

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