App developers often lament the $\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ created within apps where data is more tightly controlled by a service provider and where firms must comply to the usage policies of the platform provided.

Question $17$ options:

a$)$

security vulnerabilities

b$)$

network effects.

c$)$

walled garden.

d$)$

user interface.

e$)$

SaaS revenues.