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Video Title: Cost of Maintenance
Description: Cost of Maintenance
Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm
Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
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Let us discuss
on cost of maintenance and what are the

different factors while
calculating this cost of maintenance.

So, reports suggest that the cost of
maintenance is high.

A study on estimating software maintenance
found that the cost of maintenance is as

high as 67 percent of the cost of the
entire software process cycle.

So, it is not a matter of joke.

So, 67 percent that is the cost of the
total software development cost,

whatever we had to spend.

So, 67 percent of the cost will be spent
on the maintenance.

So, on an average the cost of software
maintenance

is more than 50 percent
of all SDLC phases.

And there are various factors which
trigger maintenance cost go high.

So, what are the factors let us go on
discussing on them.

So, the first one is our real world
factors affecting the maintenance cost.

So, the standard age of any software is
considered up to 10 to 15 years.

After that, the software would get teared
out, the software would get obsolete.

So, other software, older software which
were meant to work on slow machines with

less memory and storage capacity cannot
keep themselves challenging against newly

coming enhanced
software on the modern hardware

and the respective
operating systems and all.

So, those software which were capable to
work on a slower machine with the older

version of the hardware and the operating
systems, they cannot face the challenge to

work on the
high configuration machines with the

latest hardware
and with the latest operating systems.

Now, as a technology advances,
it becomes costly to maintain old software.

So, most
maintenance engineers are newbie and

use trial and error
method to rectify problems.

So, often changes made can easily hurt the
original structure of the software,

making it hurt for any subsequent changes.

So, while doing this maintenance,
we might be requiring to implement some

new requirements, might be we are going
for fixing some bugs in the software

detected after a long time or software
delivery of the software.

So, sometimes it may
happen that whatever the changes we are

carrying out on
the software may also affect the software.

And later, it might be
hard to implement

other maintenance
activities on the software.

So, changes are often
left undocumented, which.

Which may cause
more conflicts in the future.

When the software was developed,
we had so many documentation.

We are having a separate video on the
software documentation you can watch.

So, there we are having multiple different
types of documentation.

Before software development, we are having
one documentation.

When the software is getting developed,
then also we require one documentation.

And after development, we require another
documentation.

So, three types of documentation are
required.

But after carrying
out this maintenance activities, if the

things Things are not
getting reflected on the documentation.

So, next time the changes might be a
challenge for the developers.

So, now we are going to discuss software
end factors affecting the maintenance cost.

So, here we are considering four main
factors.

The first one is the structure of the
software program, programming language in

which the software has got developed,
and the dependence on external

environment, and staff reliability,
and also the respective availability.

So, depending upon
all these factors, the cost

of maintenance of
a software will be decided.

Thanks for watching this video.