When building custom apps using a developer toolkit, consider four decision criteria: whether the app addresses a genuine problem for a team, its expected frequency of use, the number of potential users, and the return on investment it offers for the team.

1. Decision criteria
for building apps in Teams
When using the Developer Toolkit to build a custom app for your organization or
to share with the world, first consider these four points:
Does it solve a
real problem for
a team?
How often will
it be used?
How many people
will use it?
What ROI does
it provide for
the team?