- Estimating large software implementation projects like Microsoft Dynamics is challenging due to difficulties in achieving accurate estimates with low variance.
- The article explores the factors affecting estimation, such as resource struggles, inconsistencies in estimates across teams, and the challenges of implementing new technology.
- Traditional estimation methods often lead to uncomfortable situations where estimates need to be adjusted to make the project plan work.
- T-shirt sizing and Fibonacci scales were introduced to address the communication of estimate variances but ultimately required conversion to actual numbers for project planning.
- A new approach called Top-Down Budgeting, inspired by David Heinemeier Hansson's blog post, advocates for experienced resources setting a budget for the entire backlog to shift focus from estimates to budgets.
- Top-Down Budgeting offers benefits such as reduced estimation processes, alignment on estimates, and better timeline expectations for project planning.
- Stream leads work within the budget set by Enterprise Architects and can escalate if additional budget is needed, fostering better budget management and project success.
- By adopting a top-down budgeting approach, organizations can enhance planning, accountability, and overall success in large ERP projects.
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