What is Agile Methodology? Tools, Best Practices & More (2024)

Agile Methodology is a people-focused, results-focused approach to software development that respects our rapidly changing world. It’s centered around adaptive planning, self-organization, and short delivery times. It’s flexible, fast, and aims for continuous improvements in quality, using frameworks like scrum and extreme programming (XP).

How Agile Works

The methodology works by first admitting that the old “waterfall” method of software development leaves a lot to be desired. The process of “plan, design, build, test, deliver” works okay for making cars or buildings, but not as well for creating software systems. In a business environment, where hardware, demand, and competition are all swiftly-changing variables, agile works by walking the fine line between too much process and not enough.

Agile Methodology: A Very Brief History

Before covering how agile works, its characteristics, and some of its different flavors, let’s talk about history, so you understand, at least at a high-level, how agile came to be. As you’ve just seen in the previous section, agile happened as a reaction against the shortcomings of the waterfall model. In the 1990s, several different software development methodologies appeared, with the idea of doing things differently than waterfall and other process-heavy systems. Though these methodologies differed in the details, they all shared many similarities:

• A preference for shorts iterations, instead of fixed, long phases.
• The idea that close collaboration with the client was essential.
• An inclination for an adaptive design process instead of a big phase of upfront design.

In 2001, 17 software consultants that had been experimenting and promoting their methodologies got together to talk about their approaches. The result of this meeting was the creation of the Manifesto for Agile Software Development, which laid out the values and principles of agile software development.

Keep in mind that, even though we use the term “agile methodology” throughout this article, agile isn’t a single thing. Instead of a single approach, think of agile as an umbrella term for several different methodologies—of which scrum and XP are the most well-known—that share a number of characteristics.

Agile Methodology Overview

Agile abandons the risk of spending months or years on a process that ultimately fails because of some small mistake in an early phase. The methodology relies instead on trusting employees and teams to work directly with customers to understand the goals and provide solutions in a fast and incremental way.

• Faster, smaller.Traditional software development relied on phases like outlining the requirements, planning, design, building, testing, and delivery. By contrast, agile methodology looks to deploy the first increment in a couple weeks and the entire piece of software in a couple months.
• Communication. Agile teams within the business work together daily at every stage of the project through face-to-face meetings. This collaboration and communication ensure the process stays on track even as conditions change.
• Feedback. Rather than waiting until the delivery phase to gauge success, teams leveraging an agile methodology track the success and speed of the development process regularly. Velocity is measured after the delivery of each increment.
• Trust. Agile teams and employees are self-organizing. Rather than following a manifesto of rules from managementintendedto produce the desired result, they understand the goals and create their own path to reach them.
• Adjust. Participants tune and adjust the process continually, following the Keep It Simple (KIS) principle.

For training purposes, there’s a comprehensive, downloadableoverview here.

Agile vs. Waterfall

Let’s now briefly cover how agile differs from waterfall.

The first and most obvious difference between waterfall and the agile methodologies is that the former has sequential, well-defined phases. Development flows from one phase to the next. While in the later, development occurs in a sequence of short, iterative cycles that go on indefinitely.

In waterfall, testing is a phase that comes at the very end of the process. As a result, major problems are often detected very late in the process, making them harder and more expensive to fix. On the other hand, testing isn’t a phase in agile, but an activity that occurs from the very beginning—you can research later about “shift left testing.”

Also, waterfall assumes that requirements gathering occurs perfectly. Requirements are then perfectly converted into a detailed design for the whole project, which then has to simply be implemented. Agile, on the other hand, recognizes that there’s no such thing as requirements gathering. The role of the software development team is to help and guide the clients to understand what the requirements are. Also, agile recognizes that a big design upfront isn’t possible or even desirable. Requirements are bound to change during the course of the process, due to several possible factors, including legislation, customer input, the company pivoting its focus, and so on.

So, instead of creating a big plan and committing rigidly to it, agile enthusiasts believe it makes more sense to deliver smaller amounts of software constantly, to be able to swiftly respond to change.

The 3 C’s of Agile

Agile is an iterative software development methodology that helps developers create and deliver applications more quickly and efficiently. It’s based on the principles of collaboration, customer feedback, and the “three C’s”—card, conversation, and confirmation.

Card

A card in user stories in agile is a way of breaking down user stories into smaller, more manageable tasks that can be easily monitored and identified. Each card may include additional information such as priority level or estimated completion date for further support of project management. By breaking down the stories into individual cards, developers can focus on one specific aspect at a time, making tracking progress easier and identifying any potential changes or issues before they become problems during development.

Also Read: https://stackify.com/python-tips-10-tricks-for-optimizing-your-code/

Conversation

The second C of agile is a conversation, which emphasizes frequent communication between team members to identify any possible changes or issues before they become problems during development. This involves regularly discussing progress updates with stakeholders and providing feedback for any feature requests or bug reports to ensure the final product meets all quality assurance standards required by the customer.

Also Read: https://stackify.com/retrace-logging-vinsolutions/

Confirmation

Finally, the third C of Agile is confirmation, which allows customers to review and test features before making them available in production environments. This helps to ensure applications are error-free while also giving developers valuable insights into customer preferences so they can make necessary improvements before release.

Examples of Agile Methodology

The most popular and common examples of agile are scrum, extreme programming (XP), feature driven development (FDD), dynamic systems development method (DSDM), adaptive software development (ASD), Crystal, and lean software development (LSD). Teams generally pick one or two methods. The most widely used methodologies are scrum and XP, which dovetail nicely. Scrumis a hands-on system consisting of simple interlocking steps and components:

• A product owner makes a prioritized wish list known as a product backlog.
• The scrum team takes one small piece of the top of the wish list called a sprint backlog and plans to implement it.
• The team completes their sprint backlog task in a sprint (a 2-4 week period). They assess progress in a meeting called a daily scrum.
• The ScrumMaster keeps the team focused on the goal.
• At the sprint’s end, the work is ready to ship or show. The team closes the sprint with a review, then starts a new sprint.

Here’s an example of how Scrum works

Bill meets with a customer to discuss her company’s needs. Those needs are the product backlog. Bill chooses the most important tasks to work on in the next two weeks. His team meets in a daily scrum to target work for the day ahead and address roadblocks. At the end of the sprint, Bill delivers the work, reviews the backlog, and sets the goal for the next sprint. The cycle repeats until the software is complete.

eXtreme Programming. Often used with scrum, XP is an example of how Agile can heighten customer satisfaction. Rather than deliver everything the customer could ever want far in the future, it gives them what they need now, fast. XP is centered on frequent releases and short development cycles. It uses code review, pair programming, unit testing, and frequent communication with the customer.

Here’s an example of how XP works: Bill builds a list of customer requirements by having the customer tell “user stories” that outline the features. From these, he builds a software release plan. The software will be delivered in iterations, with one delivered every couple weeks. The team works in programmer pairs, using daily meetings to smooth roadblocks. The customer delivers feedback in the form of more user stories. Thecycle repeats until the software is delivered.

For more examples,see this article.

Benefits of Agile Methodology

The benefits of agile are tied directly to its faster, lighter, more engaged mindset. The process, in a nutshell, delivers what the customer wants, when the customer wants it. There’s much less wasted time spent developing in the wrong direction, and the entire system is quicker to respond to changes. For a more comprehensive list of benefits, see this post.

• Faster. Speed is one of the biggest benefits of agile. A faster software development life cycle means less time between paying and getting paid. That, in turn, means a more profitable business.
• Increases customer satisfaction. With agile, customers don’t wait for months or years… only to get exactly what they didn’t want. Instead, they get iterations of something very close to what they want, very fast. The system adjusts quickly to refine the successful customer solution, adapting as it goes to changes in the overall environment.
• Values employees. Employees whose ideas are valued are vastly more productive than those who are ordered to follow a set of rules. The agile methodology respects employees by giving them the goal, then trusting them to reach it. Since they’re the ones with their hands on the controls and the ones who see the obstacles that crop up every day, employees are in the best position to respond to challenges and meet the goals at hand.
• Eliminates rework.By involving the customer at more than just the phases of requirements and delivery, the project remains on-task and in-tune with customer needs at every step. This means less backtracking and less “out on a limb” time between the time work is done and the time the customer suggests revisions.

Agile Best Practices

The list of best practices is long and involved, with dozens of tools to pick and choose. We’ve outlined a short list of the main benefits below. For a more comprehensive best practices guide, see this article.

• Set priorities. A product backlog is a list of prioritized tasks maintained by a product owner.
• Maintain small release cycles.The product should be released in increments every 2-4 weeks, with stakeholders giving feedback before proceeding.
• Use pair programming.Two programmers work side-by-side at a single computer. This technique actually results in an identical degree of productivity to separate programming but delivers higher quality.
• Refactor.Rework code regularly to achieve the same result with greater efficiency and clarity.
• Use test-driven development.Code the unit tests first to keep the project on task throughout. Test-driven development as an agile best practice also produces greater employee engagement, since it transforms testing from a boring grind to a coding challenge.

The list below shows some of the best tools on offer. For a complete list, see this post.

• Stackify Retrace. For a more robust solution with monitoring, errors, logs, and more, Stackify’s Retrace provides app performance insights from integration to QA to production, at the code level.
• ActiveCollab.An affordable tool for small businesses, ActiveCollab is easy to use. This software development aid requires little training and provides excellent support.
• Agilo for Scrum.Stakeholders get updated automatically on the project’s progress with Agilo for Scrum. Features sprint reports and burn down charts for better data mining.
• Atlassian Jira + Agile.This powerful project management tool facilitates development by incorporating scrum, kanban, and customizable workflows.
• Pivotal Tracker.This methodology tool is geared specifically for mobile projects. A little jargon-heavy, it’s user-friendly after a brief orientation period.

Agile: When to Use vs. When Not to Use?

Is agile a silver bullet? Should it be used all the time? Many people would be quick to give an answer and why, but the question deserves more careful consideration.

To understand why, we have to think of the characteristics of agile methodologies and the types of projects most well-suited to those characteristics. In short, we could summarize the agile methodologies as an approach that enables teams to quickly adapt to change. As such, it makes sense that agile shines in projects where there’s a lot of change.

For instance, think of a startup still trying to find market fit for its product or service. This is a very volatile scenario: things are bound to change quickly, because the company isn’t rock-solid about what it’s building. It’s common for companies at this stage to pivot after a round of investment or a change in leadership. In such a chaotic scenario, it’s simply logical to adopt a methodology that enables the team to respond to change.

Now think of the opposite extreme: an organization in a highly-regulated industry, where things change at a very slow pace. This organization doesn’t need to react as quickly to change, since change isn’t happening so often. Also, this type of organization might benefit from—or even require, due to regulations—the same types of bureaucratic processes that agile parishioners frown upon. That doesn’t mean such an organization needs to adopt the classical waterfall model, but maybe a hybrid approach that combines that best lessons from agile with a bit more process and structure would be the perfect alternative.

Additional Resources

Make use of the non-product tools and resources for success below, including the original agile manifesto and a few downloadable templates for implementation.

• Agile Manifesto. This is the original document that kicked off the agile movement. It contains all 12 key tenets of the methodology at large.
• Burn down charts. These are visual representations of work left versus remaining time. Download an Excel template herefrom SmartSheet.com.
• Agile project plan. This is a tool for tracking the progress of the overall agile project. This articlefrom Ambysoft outlines the entire project planning process.
• Agile product backlog. This helps product owners track and prioritize customer requirements. You candownload an Excel template here.

Agile is a popular development methodology widely used by development teams who need to ship apps efficiently. But agile development requires agile support, so dev leaders must arm their teams with the tools and resources they need to succeed. Check out this post for some valuable tips for making agile less fragile. Also, check out our great list of scrum boards.

Regardless of methodology, developers need to monitor application performance. Stackify Retrace combines insightful metrics with correlated logs in interactive dashboards, enabling you to hop from errors to logs to traces to decrease MTTR. See for yourself, start your free Stackify Retrace trial today.