as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create an outline of an article about software engineering.
user
i. introduction 
a. definition of software engineering
b. history of software engineering

ii. benefits of software engineering
a. greater efficiency
b. reduced costs
c. increased security

iii. types of software engineering
a. object-oriented design
b. agile development
c. model-driven development

iv. challenges of software engineering
a. complexity
b. scalability
c. performance optimization

v. conclusion
a. summary 
b. future outlook
assistant