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Last updated on 2024年5月12日

How can you balance flexibility and structure in your SDLC model for software architecture?

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Software architecture is the high-level design of a software system that defines its components, interfaces, and interactions. It is a crucial part of the system development life cycle (SDLC), which is the process of planning, developing, testing, and deploying software. However, choosing an SDLC model for software architecture is not a one-size-fits-all decision. Different models have different levels of flexibility and structure, which can affect the quality, cost, and time of the software project. How can you balance flexibility and structure in your SDLC model for software architecture? Here are some tips to help you find the best fit for your needs and goals.

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1 Understand the trade-offs

Flexibility and structure are two opposite ends of a spectrum when it comes to SDLC models, and the trade-offs between them need to be carefully weighed. Flexibility can increase creativity, innovation, and customer satisfaction, however, it can also lead to complexity, uncertainty, and risk. On the other hand, structure can increase efficiency, predictability, and quality, but it may also result in rigidity, bureaucracy, and waste. Therefore, it is important to consider both the benefits and drawbacks of each approach when deciding which SDLC model is best for a given project.

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Kusum Wadekar
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It would be rare to be successful with just one or the other Flexibility and no Structure or vice versa. A good balance of both is typically what works .. Agile methodology when applied well can leverage the advantages of flexibility and structure, in the realm of software architecture. Due to the interactive nature of this methodology and short sprints, team members : Stakeholder, Product owners, Scrum Master and development team can collaborate well and adapt faster after doing a quick Cost-Benefit and Risk analysis of the requirement and the architecture required to implement it .

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Mahesh Phadke

LinkedIn Top Voice | Digital Banking, Java, Cloud, IdM
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There is no one fix solution to all problems. As you design and discuss the technical landscape, in similar fashion the right project delivery model should be considered and altered to the need. Agile might not be the best solution always but one needs to craft the model that suits best to the situation.

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Edwin Chan

System Architect
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Every project has a budget allocated and there is a cost to flexibility, in terms of both time and cost. Waterfall model is widely used because the planning and design gives a pretty accurate estimate of the upfront cost. For example, time taken to purchase additional infrastructure, the budget required to pay for it, commissioning the system in a certain window, etc. What happens if your design change requires certain infrastructure to be purchased and it takes 6 weeks for it to arrive? Flexibility usually comes at a cost. Organisations rarely have a lot of spare capacity to adapt to major changes to design. Do not forget about the cost and time factor for changes.

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2 Choose an appropriate model

There are many SDLC models to choose from, each with its own advantages and disadvantages. Waterfall is the most structured, suitable for simple and stable projects. Agile is the most flexible, suitable for complex and dynamic projects. Spiral is a hybrid model, suitable for large and risky projects with high standards of quality and security. Each of these models divides the development process into distinct phases, such as planning, risk analysis, engineering, and evaluation. The number of phases and their order vary depending on the model chosen.

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Doug Brown

Sr. Managing Consultant (Retired), IBM Master Inventor (Retired) at IBM Corp and IBM Interactive Experience
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I always rely on measured delivery and feedback. I try to deliver a small segment rapidly then ask for feedback from the project owner. This has two positive outcomes. 1. It provides a measured deliverable in a short time span which reassures the owner that the money is being invested properly and 2. It assures that you are on the right track for owner satisfaction with feedback on what you got either right or wrong. Also always remember to agree on what is in scope and what is not in scope.

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Kiran Asokan

Integration Architect | Advanced Data Analytics Specialist | Cloud Architect | Agile Practitioner
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Follow the KISS principle and stay agile. Don't overdo the processes. Traditional SDLC processes inherently bring structure by the way of extensive documentation. Eg : extensive technical specifications which we all know will fall out of the sync with the final delivered product. 1. Do minimal/lean documentation 2. Keep the documentation work related to the SDLC processes simple. Eg: Simple bare minimal technical specification and design document that shows high level data flow and process orchestrations. Do not write pages and pages of documentation. 3. Never refer code components in documentation unless absolutely necessary. 4. Gather enough requirements to start the sprints. 5. Entire SDLC should be iterative and agile.

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3 Adapt to the context

When selecting an SDLC model for a software architecture project, you need to consider the context of the project, such as its size and scope, the requirements and expectations of stakeholders, and the resources and constraints of the project. For example, larger and more complex projects may require more structure and planning than smaller and simpler ones. Additionally, different stakeholders may have different preferences and priorities for the software architecture, such as functionality, performance, usability, reliability, etc. Finally, the availability and allocation of time, money, people, and tools may affect the feasibility and suitability of different SDLC models.

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4 Review and improve

No matter the SDLC model you select for your software architecture project, it is essential to review and improve the process and outcomes. To do this, collect feedback from users, customers, and developers of the software architecture. Additionally, measure and evaluate the quality, cost, and time of the project against predefined criteria and goals. Furthermore, identify and resolve issues, challenges, and gaps in the software architecture project. Finally, implement and document changes, improvements, and lessons learned in the software architecture project. Through following these steps, you can achieve a balance of flexibility and structure in your SDLC model for software architecture while delivering a software system that meets your needs and goals.

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5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can you balance flexibility and structure in your SDLC model for software architecture?

1

2

3

4

5

1 Understand the trade-offs

2 Choose an appropriate model

3 Adapt to the context

4 Review and improve

5 Here’s what else to consider

System Development

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How can you balance flexibility and structure in your SDLC model for software architecture?

1

2

3

4

5

1 Understand the trade-offs

2 Choose an appropriate model

3 Adapt to the context

4 Review and improve

5 Here’s what else to consider

System Development

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