Together with the Release Plan, the Product Backlog is jointly compiled by the busines Product Owner and the Development Team.. Quality-related features, risks, dependencies, constraint
Trang 1Project Management and Scrum – A Side by Side Comparison
by Anne Loeser, October 2006 For decades, software development projects have followed the classic “waterfall” method in which software
development initiatives were carefully analyzed, designed, documented, coded, tested, and ultimately delivered
to the customer – sometimes years after inception By then, it was not uncommon for business needs to have
changed and for the resulting system to fall short of customers’ expectations According to the Standish Group,
software development projects have an overall success rate of 34% In response to this rather disappointing
approach to software development, “Agile” methodologies – which are light on documentation and formality -
began to emerge in the 1990’s Scrum, which is one of several Agile approaches, was first developed and
presented in 1995 so it is relatively novel when compared with traditional software development processes
which have been used for decades The purpose of this paper is to compare traditional waterfall project
standards and deliverables with those in Scrum, and to contrast the Project Manager’s role with that of the
Scrum Master
Traditional Project Management at a Glance:
According to the Project Management Body of Knowledge (PMBOK), a “project” is a temporary endeavor
undertaken to create a unique product or service.”1 Projects are typically divided into phases in order to
provide better control of the project’s progress and deliverables; each phase has a prescribed set of deliverables
Collectively, the project phases are known as the “Project Lifecycle.”
Project Management is a term encompassing the application of skills, tools, techniques, and knowledge applied
to a project to meet or exceed stakeholder expectations Project Managers typically oversee the following
aspects of a project:
1 Project Scope, which ensures that all the required work, and only the required work, is planned, defined,
documented, and delivered to the customer’s satisfaction
2 Project Schedule, the objective of which is timely delivery of the product or service It entails activity
definition and estimating, and schedule development, monitoring and control
3 Project Cost, which is intended to ensure that the project is delivered within its approved budget It includes
cost estimation and expense monitoring
4 Project Quality, which encompasses quality definition, assurance, and control
5 Project Communication for information dissemination and collection
6 Project Risk including risk identification, quantification, avoidance, and mitigation
7 Project Human Resources Management including but not limited to:
• Organizational Planning – identifying, documenting and assigning project roles, responsibilities and
reporting relationships
• Staff Acquisition – obtaining human resources for the project
• Team development – enhancing individual and group skills
Scrum at a Glance:
Scrum is one of several Agile methods for developing and deploying software, although it may be used for
non-software initiatives whenever people need to work together to achieve a common goal The primary objective
of Agile development is to deliver value early in the Project Lifecycle based upon customer and market
1 PMI Standards Committee, Project Management Body of Knowledge, Library of Congress Cataloguing-in-Publication data, 1996, page 10
Trang 212/6/2006 Page 2
demands The ability to deliver value early and often, yet readily adapting to change, is considered to be a
major contributor in making Agile Development one of the more rapidly growing trends in technology
Below is a list of Scrum characteristics in contrast with traditional waterfall attributes:
• A dynamic Product Backlog of prioritized work to be done Although not specifically mentioned in
traditional project management above, this backlog may be loosely compared with traditional projects or
smaller initiatives that are waiting to become active Together with the Release Plan, the Product
Backlog is jointly compiled by the busines Product Owner and the Development Team
• A Release Plan to deliver larger initiatives across multiple Sprints, with the highest priority first The
Release Plan is similar to the traditional Project Schedule in that it identifies product features and the
corresponding timeframes (possibly phases) in which features will be delivered, albeit at a higher level
than traditional Project Plans Quality-related features, risks, dependencies, constraints, assumptions
and issues may also be identified and documented as part of the Release Plan, which is generated by the
Product Owner and Development Team
• A Sprint Planning Meeting in which backlog items are selected for iterations(s) called Sprints (which
are usually 30 days in length) Product Owners and the Development Team finalize features and
identify related tasks to be completed within the Sprint, and provide task estimates as part of planning
When applicable, the Release Plan will be referred to during the Sprint Planning Meeting Risks and
issues are also discussed at the Sprint Planning Meeting The resulting Sprint consists of condensed
Planning, Development, Testing and Release Project Lifecycle tasks and activities
• A living Sprint Backlog or Sprint Plan of tasks to be done within the Sprint When tasks are identified
in the Sprint Planning Meeting or during a Sprint, they are entered into the Sprint Backlog The Sprint
Backlog is related to the Project Scope mentioned above in traditional projects because it encompasses
activities and deliverables that need to be completed within the Sprint When a particular Sprint is part
of a Release Plan encompassing multiple Sprints, its backlog may be compared to the deliverables
within a traditional project phase The product Owner and Development Team create the Sprint
Backlog
• A brief daily Sprint Meeting or Scrum, at which each team member’s progress is disclosed, upcoming
work is described and committed to, and impediments are raised The Sprint Backlog is updated at the
Sprint Meeting, and business partners are frequently members of the Scrum team The daily meeting is
the primary formal means of communication among the team, although informal meetings and other
forms of communication throughout the day are encouraged
• A Demo at which Product Owners (and occasionally developers) demonstrate accomplishments during
the Sprint Each Sprint should deliver a usable product increment The Demo has no equivalent in
traditional projects
• A Retrospective, at which team members reflect about the past sprint and make recommendations about
future improvements or changes The Retrospective may be loosely compared with
Post-Implementation Reviews in traditional projects
Scrum is facilitated by a Scrum Master whose primary responsibility is to remove obstacles hindering the team
from delivering the Sprint goal The Scrum Master is not the leader of the team because the Sprint team is
self-organizing Instead, the Scrum Master acts as a facilitator for issues resolution and communication, rather than
as a manager controlling the team The Scrum Master notes and removes obstacles, safeguards the Scrum
process, facilitates collaboration, and acts as a “sheepdog” for the team Whereas the Project Manager is held
ultimately accountable for traditional projects, the entire Sprint team - including the Scrum Master - shares
responsibility for consummating the Sprint’s objectives
Relatively little has been written about budget and cost control with respect to Scrum Some corporations
consider cost to be a factor when considering which features to include in a Sprint Generally the organization
itself is left to decide who will be in charge of monitoring the budget for a Scrum initiative
Trang 3Scrum utilizes an empirical approach Unlike waterfall methodologies, Scrum accepts that a software initiative
cannot be completely understood or fully defined up-front, and that requirements will change over time
Scrum’s purpose is to maximize the team's ability to respond in a responsive manner to change, and to produce
a working product increment which is demonstrated to and accepted by the user in every Sprint
It is obvious that Scrum diverges from the approach to Project Management exemplified in the Project
Management Body of Knowledge (PMBOK) - which has as its goal quality through application of a series of
prescribed processes, documentation, and controls overseen by the Project Manager In contrast, the Agile
movement espouses that people and their interactions with each other are the key to creating value
According to the Digital Focus Agile 2006 Market Survey, which incorporates 136 executives across 128
organizations ranging in size from under 25 employees to over 5,000 employees, 46% of mid-size companies
and 12% of large companies are using Agile practices company-wide In the large company category, 44
percent are using Agile practices on one or more projects
Trang 412/6/2006 Page 4
Project Management Comparison – Traditional and Scrum
The following table provides a side-by-side comparison of Project Management practices and deliverables with
respect to the traditional waterfall approach vs Scrum
Project Management Practices and Deliverables: Traditional & Scrum
Processes
Project Planning
(Scope,
Schedule,
Communication,
and Human
Resources)
There is no equivalent of a Vision statement in waterfall projects, although a corporate Strategic Directive may be derived to specify direction and ultimately the projects that support it
There is no specific equivalent of a Roadmap in waterfall projects, although companies may generate their own internal Strategic Plans in support of Strategic Directives
Once a project has been justified and approved, the
PM leads the requirements gathering and time estimation effort by holding extensive meetings with Business Analysts, designers, architects, IT, Product Owner(s) and key stakeholders The PM oversees the creation of documentation-related deliverables such
as Feasibility Studies, Statements of Work, Communication Plan, Contracts, Requirements Documents, etc
The PM creates the Project Plan to derive a preliminary project schedule and subsequently baselines the plan after reviewing it with project team members and management
The PM meets with the project team periodically (as specified within the Communication Plan) to update the Project Plan with actual hours and revised estimates, and to discuss risks and/or issues The PM
is chartered with documenting risks and issues and overseeing their successful closure
Line Management decides upon project team resource allocations The PM may negotiate with management at any time for resources if available resources are insufficient to deliver the project scope within the prescribed schedule
The project is usually end date-driven and generally incorporates as many requirements as possible
5 Levels of Planning:
Vision (a brief statement specifying direction)
derived by Product Owner
Roadmap (a brief document consisting of 1 year’s
worth of high level features) created by the Product Owner & Executives
Release Plan to deliver larger initiatives across
multiple Sprints, compiled by the Product Owner and Development Team The effort is usually facilitated
by the Scrum Master
A Sprint Plan identifying all tasks & estimated task
hours is created by the Product Owner &
Development Team – not by the Scrum Master It is updated daily by the team at the Scrum meeting once the Sprint commences Only estimated hours outstanding are tracked – actual hours are neither requested nor recorded
Daily Sprint Meeting or Scrum (15 min.) which is
facilitated by the Scrum Master This is the main means of ongoing team communication The Scrum Master asks each team member what was committed
to yesterday, what is being committed to today, and
if there are any obstacles The Scrum Master records obstacles and oversees their removal The Sprint Plan is updated with estimated hours outstanding
Line Management allocates Sprint resources
Negotiation prior to the beginning of the Sprint may
or may not be possible, depending upon corporate adaptation of Scrum Scrum team composition does
not change during the course of the Sprint
Project schedule is derived via the Release Plan if appropriate Each Sprint is of fixed duration, and the highest priority items are delivered in the initial Sprint(s)
Trang 5Monitoring
Project Change
Control and Risk
– (Scope and
Risk)
Changes to requirements are typically managed through a Change Control Process overseen by the Project Manager Activities include, sizing, and obtaining management approval
The Project Manager is responsible for Risk Analysis and Contingency Planning, and usually maintains and publishes a Risk Document
Only the Sprint team can change features and tasks within a Sprint, and only if jointly agreed by all members of the Sprint Team Otherwise the requested item is added to the Product Backlog
The team performs risk management activities before starting development work Risk may be discussed during Release, Sprint Planning, and/or daily Scrum Meetings
Task Ownership;
Actuals/Estimates
(Schedule and
Human
Resources)
The PM creates a Project Plan with tasks, assignments, and estimated hours The Project Plan is reviewed with the Project Team and baselined once all parties concur Deviations from the baseline must
be explained and addressed by the PM
The PM periodically updates the Project Plan with actual hours and new estimates, as well as with additional tasks based upon team input
The PM acts as a coach and leader for the project team and assists team members in overcoming obstacles
Team members create, sign up for, and estimate tasks in lieu of being assigned to tasks by the Scrum Master There is no baselining in Scrum
Team members may adjust estimated outstanding hours and add, transfer, or cancel tasks during the
daily Sprint Meeting Actual hours are not tracked –
only hours outstanding
The Scrum Master facilitates the team but typically does not coach or lead team members, who are considered self-managing
Project Overruns
(Schedule)
If the completion date of the project or phase appears to be in jeopardy, the PM is responsible for negotiating one or more of the 5 following items:
• Scope (reduction)
• Schedule
• Cost
• Resources
• Quality
Scrum promotes a fixed 30 day timeframe for deliverables If it appears that a deliverable(s) may
be delayed, the item(s) will be added to the Product Backlog and will most likely be carried forward to the next Sprint The Sprint itself is never extended, nor does the Scrum Master negotiate for additional resources or time
Project Budget
(Cost)
Typically, a project must provide ROI in order to be launched, at which point a Project Budget is derived
The PM usually manages the Project Budget, which includes resource costs, technical costs, consultancy, departmental charge backs (if appropriate), and other expenses Potential overruns must be justified and approved, and/or the PM must negotiate adjustments
to the aforementioned 5 items in order to meet budget
At the beginning of each Sprint, the Product Owner may be asked how much they want to spend on the Sprint Based upon the answer, the team may use cost as a guideline when selecting an appropriate amount of work from the Product Backlog to be done
in the Sprint
No mention could be found in Scrum materials regarding Sprint-related budgets It is assumed that each corporation adopts its own practices with respect to software development costs
Project Control –
(Quality)
From the customer’s perspective, quality means on-time system delivery, to spec, and within budget and schedule
Quality Management Plans and Checklists are often used to document and cross-check quality
requirements Although the PM might not be personally accountable for drafting these, s/he is responsible for ensuring that quality requirements and metrics are actualized by the project
In waterfall projects, QA personnel typically
In Scrum, quality entails the delivery of a working product increment by the end of the Sprint in accordance with the specified feature(s) In cases where expense is a factor, cost constraints must be adhered to as well
When applicable, quality-related features may be identified in Release and/or Sprint Planning Meetings, and they are built during the Sprint As with any other feature, the entire Sprint team is accountable for providing the quality feature
In Scrum, QA personnel may be needed for testing
Trang 612/6/2006 Page 6
become engaged in the testing phase in every Sprint, which can create a resource burden
on this group
Documents
Cost Benefit
Analysis
A Cost Benefit Analysis (CBA) may be submitted and approved in order for a project to be done The
PM may or may not be chartered with compiling this document ROI is typically a key factor with respect
to whether an initiative is approved for development
The author could not locate a CBA equivalent in Scrum
Requirements Related documents include but are not limited to:
* Feasibility Study
* Statement of Work
* Project Scope
* Requirements Document
* Functional Design
* Detailed Design
* Test Plans and Test Cases, which are sometimes done at the Requirements Definition Phase The PM is generally chartered with overseeing that the necessary requirements-related documentation is compiled and approved
In Scrum, there are 3 requirements-related items as described on page 2 of this document:
* Product Backlog
* Release Plan
* Sprint Backlog/Plan
All three items are compiled by the Product Owner and Development Team, although the Scrum Master may facilitate the meetings
Change Control PM is accountable for overseeing that changes to
original project scope are documented, submitted, and approved
Once a Sprint is underway, the entire team must concur upon a change before it is accepted Other changes may be added to the Product Backlog at any time
Communication
Plan
PM compiles and disseminates a Communictaion Plan depricting project communication-related deliverables (such as Team Meetings and Steering Committee Status Reports), specifying who will receive or be involved in them, and how often
There is no equivalent to the Communication Plan
in Scrum
Budget
Spreadsheet
Generally the PM is accountable for overseeing and reporting the Project Budget
The author could find no mention of Project Budget maintenance with specific respect to Scrum
Issues Log The PM is accountable for compiling and updating
the Issues Log and for overseeing that issues are resolved
Issues/obstacles can be raised at any point, and the Scrum Master is responsible for documenting them, removing obsacles, and overseeing their closure
Risk Analysis The PM is accountable for compiling and updating
the Risk Analysis and Contingency Plan, and for navigating the team safely through the risks in order
to deliver the project successfully
Risks are documented by the Product Owner and Development Team in the Release Plan The entire Sprint Team is responsible for resolving risks throughout the Sprint
Project Plan The PM uses the Project Plan to derive the
preliminary project schedule The PM then baselines the schedule and meets periodically with the team to update the Project Plan with actual hours and revised estimates/tasks
The Sprint Plan (tasks & hours per Sprint) is created by the Product Owner &Dev Team – not by the Scrum Master It is updated daily by the team once the Sprint begins Only estimated hours outstanding are tracked The Sprint Plan is not baselined
Status Reports The PM generates and delivers Project Status
Reports as warranted
Scrum does not specifically address project status reports Scrum is generally light on documentation;
it emphasizes personal interaction which would normally entail status-related information
Quality
Management
Plan; Checklists
Quality Management Plans and Checklists are often used to document and cross-check quality
requirements Although the PM might not be personally accountable for drafting these, s/he is responsible for ensuring that quality requirements and metrics are actualized by the project
When applicable, quality-related features may be identified in Release and/or Sprint Planning Meetings and built during the Sprint As with any other feature, the entire Sprint team is accountable for providing the tasks and activities to support quality-related items
Test Plans Although the PM may not actually write test plans,
the PM is responsible for ensuring that test plans are documented and successfully deployed
Scrum acknowledges that a viable product increment must be delivered and accepted in a Sprint It is up to the Product Owner to determine and ultimately test for viability within the Sprint
Trang 7Post-Implementation
Support
The PM is responsible for ensuring that post-installation support is available to the product recipient
A “stabilizing Sprint” may be planned for in the Release Plan and executed where appropriate
Team Meetings
Steering
Committee Status
Meetings
For high-visibility, high-risk endeavors, the PM will set up and participate in regularly scheduled Steering Committee Meetings (as per the Communication Plan) at which the status of the project is discussed
The author could find no mention of Steering Committee Meetings with respect to Scrum
Team Meetings As per the Communictaion Plan, the PM will usually
schedule regular team meetings to discuss progress, actuals/estimates, issues, and risk Such meetings may last an hour or more
In Scrum, the 15-minute daily Scrum meeting is the key vehicle for discussing progress, roadblocks, and upcoming commitments as well as obstacles
Post-Implementation
Review
There is no equivalent to the Sprint Demo in traditional waterfall projects
It is common for the PM to hold a Post Implementation Review with the Project Team at the end of the project in order to document what went well and what could be improved upon
At the end of each Sprint, a Demo is held at which the product recipient demonstrates the usable product increment created during the Sprint
A Retrospective is held, at which team members reflect about the past Sprint and make
recommendations about future improvements or changes The Scrum Master typically hosts the Retrospective
Recommendation, Conclusion, and Final Questions:
As can be readily determined from the above, Scrum strongly advocates self-managing teams in which the
Scrum Master acts primarily as a facilitator helping the team solidify its tasks as well as ‘running interference’
regarding any obstacles that may have a negative impact on team productivity Self-managing teams require
time to evolve; they do not happen overnight Since Scrum documentation is relatively light on how to prepare
a team to become self-sufficient, it is recommended that formal team-related coaching be provided prior to
implementing Scrum
For seasoned Project Managers, the transition from leader to facilitator may be a difficult mindset to change,
especially if the transition is fairly sudden The traditional Project Manager may be compared with the captain
of a ship who is chartered with steering the course, anticipating and overcoming difficulties, and ultimately
safely delivering the cargo and passengers on schedule In contrast, the Scrum Master acts mainly as an enabler
to the Scrum Team since the entire team is responsible for the outcome of each Sprint Whereas the Scrum
Master primarily utilizes facilitation skills during the course of a Sprint, facilitation is a subset of the entire skill
set required to be a successful PM Experience and knowledge regarding requirements definition, time
management, estimating, negotiating, budget oversight, and anticipating risk are all expected of the seasoned
Project Manager How these attributes may be best leveraged in Scrum - if at all - and to what extent the Scrum
Master is free to tap into them is yet to be determined
Two final questions to pronder:
1 - Will the definition of Scrum Master evolve over the next decade to incorporate more traditional project
management skills and approaches?
Only time will tell, and the answer may depend upon how Scrum is adapted with regard to a company’s specific
culture
2 - Will seasoned Project Managers who become Scrum Master find themselves underutilized?
If so, they will probably write a white paper as this author did
Anne Loeser can be reached at bestbird@hotmail.com.