Software Development Cross Solution - Index of - Free

uilding achievable milestones
Work your way to a reasonable Milestone 1.0
With Orion’s Orbits, going from one person to three—by adding two
more developers—can have a positive impact. So let’s see how that
works out:
First you add two new people to your team...
Adding two developers to your team (that’s three including you) helps, but it’s not a magical
solution. Two developers can add a lot of work time to your project, but there’s still work left:
Title:
Description:
Title: Order flight DVD
273 days of
work to do
...then you reprioritize with the customer
Now you’ve got a nice way to figure out what has to be removed. We’ve got 190 days of work
time, and 273 days of work. So we need to talk to the customer and remove around 83 days
of work by shifting out some user stories from Milestone 1.0.
Q: But 184 days of work is less than the 190 days that our
three-developer team can produce, shouldn’t we add some
more features with the customer?
A: The overall estimate doesn’t actually have to be exactly 190
days. Given that we’re dealing with estimates anyway, which are
rarely 100% accurate, and that we tend to be slightly optimistic in
our estimates, 184 days is close enough to the 190-day mark to be
reasonably confident of delivering in that time.
78 Chapter 3
Review flight
Description:
Title: Choose seating
Title: Description: Order Est: in-flight meal
15 days
Book Est: a shuttle 15 days
Pay Est: with 15 Visa/MC/PayPal days
15 days
Description:
Title:
Description:
Title:
Description: Est:
Est:
Est:
15 days
15 days
Title:
Review flight
Description:
Title: Order flight DVD
Description:
Title: Choose seating
Title: Description: Order Est: in-flight meal
15 days
Book Est: a shuttle 15 days
Pay Est: with 15 Visa/MC/PayPal days
15 days
Description:
Title:
Description:
Title:
Description: Est:
Est:
Est:
15 days
15 days
273 days of
work to do
-
3 developers
= 190 days
-
Title: Review flight
Description:
Title: Order flight DVD
Description:
Est: 15 days
Est: 15 days
Customer removed features
Download at WoweBook.Com
Days of work that your
team of 3, can achieve
in 90 calendar days.
=
83 days
of work left
to do!
184 days
= Looking better, with a few days
left over to give you a bit of
breathing space in your milestone.
Q: How did you come up with 190 days when you added
two new developers?
A: At this point this number is a guesstimate. We’ve guessed
that adding two people to build a team of three will mean we can
do around 190 days of work in 90 calendar days. There are ways
to back up this guess with some evidence using something called
“team velocity,” but we’ll get back to that later on in this chapter.