How does Application Security relate to software development?

Define application and software development
Briefly describe the role of application security in software development

Discuss two software development approaches

For each briefly discuss the high-level principles/approach
Discuss how Application Security should be included in each phase/step of the approaches
Discuss what elements of the application should be addressed and how.  Examples: data at rest, data in motion, identity management, etc.

Discuss the potential downfalls that can occur if Application Security is not integrated with application development

For all writing assignments ensure that you do the following:

Write 1000 to 1500 words in APA format.
Utilize at least five scholarly references. 
Note that scholarly references do not include Wikipedia, .COM websites, blogs, or other non-peer reviewed sources. 
Utilize Google Scholar and/or the university library. 
Do not copy and paste bulleted lists.  Instead, read the material and in your words, describe the recommendation citing the source. 
Review the rubric to see how you will be graded.
Plagiarism will result in a zero for the assignment. 
The second instance of plagiarism will result in your failure of this class.
If you use a source, cite it.  If you do not, it is plagiarism.