topic 1 Flashcards
(17 cards)
change management
the process of transitioning individuals, teams and organisation from the current state to the desired one effectively
legacy systems
old softwares that are still in use because of compatibility or cost reasons
business merger (merging?)
combining two or more businesses in one (legal) entity
SaaS (Software as a Service)
a modern software delivery service where applications are hosted and managed centrally on a remote software
premise software
software installed on a local hardware and hosted on dedicated servers within a company’s network
software incompatibility
when two different software systems cannot work together smoothly
parallel changeover
introducing a new system while the old one is still operational for a transition period
big bang/ direct changeover
abruptly switching from one system to the other
challenges of change
- data loss
- old system may be faster
- people don’t like change
- new system may omit some features
- software incompatibility
- expensive
ways of change
- direct changeover/ big bang
- parallel changeover
- pilot changeover
- phased changeover
evaluation of big bang
pros:
- low cost
- new system immediately available
cons:
- high risk: no backup
evaluation of parallel changeover
pros:
backup available
to systems can be compared to see which one works best (both correctly and efficiently for the org,)
cons:
it’s expensive to run two systems at the same time
evaluation of phased conversion
pros:
users can get used to new system
training can occur in phases
only a small part of the data/functionality will be lost in case of (new) system failure
cons:
no backup for that part of the data
lengthy process
evaluation of pilot
pros:
- only small part of data can be lost and it won’t hinder the company’s operations too much
- pilot group can train other users (employees in a company)
- can fix bugs and receive feedback
cons:
- lengthy process
- no backup for the data of the pilot group
Saas evaluation
pros:
- easier maintenance
- cost-effective + pay as you go
- employee mobility *
cons:
- availability
- security
- compliance
=> no control over everything that is managed by the parent company
- data corruption and recovery
- if the provider gets acquired everything may change and slow down the operations of companies relying on the server