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ID1219 Software Evolution and Maintenance 7.5 credits

Maintenance costs amount up to 90% of the software life cycle cost. Today, it is mainly conducted in an ad hoc way. The course Software Evolution and Maintenance provides a broad spectrum of software processes that take place after delivery of the first version of a newly developed software system. This includes processes for correcting, continuous development, re-engineering, supporting, retiring and processes for managing emergency problems and for managing software quality. The course will also focus on processes that go in parallel with new development during which one prepares software systems for future continuous development and maintenance.

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For course offering

Autumn 2023 Start 28 Aug 2023 programme students

Application code


Headings with content from the Course syllabus ID1219 (Spring 2023–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

  • Definition of the software life-cycle.
  • Types of refinement and maintenance of software.
  • Process models for most types of refinement and maintenance of software.
  • First, second, and third lines of support.
  • Testing in refinement and maintenance of software.
  • Transition from development to refinement and maintenance of software (software transition).
  • Aging of software.
  • Phasing-out (retirement) of software.
  • Revision (reengineering) of software.
  • Evolvability and maintainability of software.
  • Process models on organizational structures.
  • Quality management and reverse engineering.
  • Status in industry and research.

Intended learning outcomes

Having passed the course, the student should be able to:

  • describe the software life-cycle process and its component processes
  • explain the interplay between software development and software refinement and maintenance
  • apply their knowledge in software refinement by defining, follow. and follow up on software life-cycle processes and the roles that are involved in each respective process
  • apply their technical knowledge to develop and maintain software systems
  • handle software problems that have appeared in an existing software system and take appropriate measures
  • explain current trends in managing the software life-cycle
  • act in an ethical manner when developing and maintaining software systems
  • work in a team when handling complex problems
  • communicate their work and its results in writing

in order to

  • obtain an understanding of the extent and complexity of the development and maintenance of an already existing software system.

Literature and preparations

Specific prerequisites

Completed course II1302 Projects and Project Methods 7.5 credits, or IV1300 Software Engineering 7.5 credits, or both IV1303 Modern software development 6 credits and ID1003 Project IT 7.5 credits or an equivalent project course on at least 7.5 credits.

Recommended prerequisites

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Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

P, F


  • ÖVNA - Exercises, 1.5 credits, grading scale: P, F
  • ÖVNB - Exercises, 2.0 credits, grading scale: P, F
  • ÖVNC - Ecersises, 2.0 credits, grading scale: P, F
  • ÖVND - Exercises, 2.0 credits, grading scale: P, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Opportunity to complete the requirements via supplementary examination

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Opportunity to raise an approved grade via renewed examination

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Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course room in Canvas

Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.

Offered by

Main field of study


Education cycle

First cycle

Add-on studies

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