What is the Project Life Cycle?
Projects drift when nobody agrees where they stand. Learn the project management skill that takes a project from idea to done.
You’re probably already running projects, even if project manager isn’t in your title. It might be the ticketing system replacement, a network refresh, or the office move that somehow ended up on your desk. What usually separates a project that lands on schedule from one that lingers for months is knowing where it stands and what comes next, and that’s what the project life cycle gives you.
Keep reading to see each phase play out in a real-world project. Then start the free first skill in the CompTIA Project+ course to nail down the framework in under an hour, no account required.
Start This Skill for Free: Project+ Basic Concepts
What You Can Do After Completing Your First Project+ Skill
Simona Millham, a Microsoft Certified Trainer and certified ScrumMaster with over a decade of experience, teaches this first skill within CBT Nuggets' Project+ course. It's built for the project you have right now, whether or not you ever sit for the exam. Here's what you'll gain after finishing this skill:
- Know exactly where your project stands. Name all five lifecycle phases in order and point to the one you’re in right now.
- Catch work that’s quietly becoming permanent. Tell a project apart from ongoing operations, so finished work actually gets closed out.
- Stop mixing up phases and process groups. Explain why monitoring and controlling runs through the whole project, not just one phase.
- Pick your certification with confidence. Know how Project+ compares with CAPM and which one fits your goals.
- Give status updates using shared language. Report progress in the same vocabulary your stakeholders use.
That last one pays off fastest. When everyone uses the same terms, status meetings spend less time decoding what "almost done" means.
The Project Life Cycle: Explained
The project life cycle is the series of phases a project moves through from start to finish. Think of it as the order of operations for project work: it tells you what has to happen before what. Nobody builds a detailed schedule before the project is approved, and nobody writes up lessons learned before the work is done. When those steps happen out of order, that's usually where a project starts to drift.
First, though, it helps to know what actually counts as a project. PMI's PMBOK Guide describes three characteristics: a project is temporary, with a defined beginning and end; it creates something unique, like a new system or a migrated dataset; and it exists for a reason, usually a business need or a problem someone wants solved.
That's what separates projects from operations. Patching servers, keeping the help desk staffed, and resetting passwords repeat forever. Replacing the ticketing system has a start date, a go-live date, and a finish line. Telling the two apart is what lets you plan a clear end point, so the work gets handed off cleanly once it’s done.
The 5 Project Phases
CompTIA breaks the project life cycle into five phases, and each one answers a different question.
| Phase | The question it answers | What you walk away with |
|---|---|---|
| 1. Discovery and concept preparation | Is this worth doing? | A business case leadership can approve |
| 2. Initiation | What's the goal, and who's involved? | A project charter |
| 3. Planning | How will this actually get done? | Scope, schedule, budget, and risk plans |
| 4. Execution | Is the work on track? | Delivered work and controlled changes |
| 5. Closing | Is it really finished? | Sign-off, handoff, and lessons learned |
To see the phases in action, follow one project from start to finish: migrating your company's file shares from an aging on-premises server to cloud storage.
Phase 1: Discovery and Concept Preparation
Every project starts as an idea, and discovery is where that idea has to prove itself. You confirm the problem is real, that a project would actually fix it, and that the rough cost is worth the benefit. It's also the phase teams skip most often, because jumping straight to the work feels productive. That's how projects end up solving the wrong problem, or losing their sponsor halfway through when someone finally asks why it's happening.
Example: Your file server goes out of warranty in six months, and it's almost full. Before anyone buys anything, you compare two options, replacing the hardware or moving to cloud storage, and rough out the cost of each. You also check whether a migration fixes the real problems, which turn out to be aging hardware and remote staff who struggle to reach their files. Leadership agrees the move is worth pursuing.
Phase 2: Project Initiation
Initiation is where the project becomes official. Someone gets named project manager, the goal gets defined at a high level, and you identify every stakeholder who will be affected or needs to sign off. All of that lands in a project charter, the document that gives the project manager authority to use the organization's resources. Without one, you're asking people for help on a project that technically doesn't exist.
Example: Leadership approves the migration and names you project manager. Your charter sets the goal, every department's files in cloud storage before the warranty runs out with no lost access, and names the stakeholders: department heads, security, the help desk, and whoever owns the budget.
Phase 3: Planning
Planning turns the goal into a plan you can measure against. Scope, schedule, budget, risks, and communication all get defined here. It's also where project managers do some of their most valuable work: finding everything that depends on someone else, like vendor lead times, approvals, and other teams' queues, and scheduling around it before it turns into a delay. The technical work is usually the part you control. What makes projects late is everything that isn't.
Example: You inventory what's on the server, decide what gets archived rather than moved, map folder permissions, and schedule cutovers one department at a time. Then you list what you don't control. The license purchase needs budget approval, security has to review the new setup before go-live, and finance can't migrate during month-end close. Security's review queue is three weeks long, so that request goes in first, before anything else gets built. Finally, a communication plan sets who hears what, and when.
Phase 4: Execution
Execution is where the plan meets reality. You coordinate people and vendors, report status, and handle the changes that inevitably show up. Your most important tool here is change control: every new request gets weighed for its effect on cost, schedule, and scope before anyone says yes, which is what keeps a three-month project from turning into a six-month one.
Example: A pilot department moves first and uncovers a batch of permission issues, which you fix before anyone else migrates. Weekly status updates keep department heads in the loop. Then, midway through, finance asks to bring 10 years of archived files along. It sounds like a small ask, but it could double the data you're moving, so the request goes through change control, where you size up the extra storage cost and schedule impact before it gets approved or deferred.
Phase 5: Project Closing
Closing is the phase that makes a project actually end. You confirm the deliverables meet the goal, hand ongoing work to the people who will own it, close out contracts, and record what you learned. Skip it, and a finished project lingers for months as an open item that somehow still belongs to you.
Example: Each department head signs off that their files and access are right. You decommission the old server, hand over ongoing support to the help desk, and close out the migration tool's license. Then you write down the lessons learned, starting with this one: clean up permissions before the next migration begins.
VIDEO: Watch the Five Project Life Cycle Phases Explained
Why Earn Project+ Before Your Next Project?
Every stalled project teaches you something, but the lessons get expensive: a missed go-live, a weekend of rework, a stakeholder who stops trusting your timeline. Earning Project+ gives you the framework up front, and a credential that shows you know how to run a project, not just the technology inside it.
It's also a one-time investment. CompTIA's Project+ certification never needs renewal, and it's vendor-neutral, so it applies to any project regardless of the tools involved. The PK0-005 exam has up to 90 questions in 90 minutes, mixing multiple-choice and performance-based items, with a passing score of 710 on a 100 to 900 scale. CompTIA recommends 6 to 12 months of hands-on project management experience. Not sure your background qualifies? The free skill covers who the exam is aimed at, so it's a quick way to find out before you commit.
Knowledge checks after each lesson in CBT Nuggets Project+ training catch gaps while the material is still fresh, and practice exams confirm you're ready before you schedule PK0-005. When a question comes up mid-project, like how change control differs from scope management, IT Trainerbot answers from CBT Nuggets training, and every answer cites a timestamped link to the video where the topic is covered.
Project+ also pairs well with the technical certifications you may already be working toward, since it covers the part of the job those courses don't. Browse certifications to plan what comes next.
Explore the Full Project+ Course
Train Your Whole Team on Project Management
Projects rarely belong to one person. Whether it’s a migration, a rollout, or an upgrade, the work depends on other teams, vendors, and whoever approves the budget, and it moves faster when everyone uses the same terms for where it stands.
If you lead a team, the free skill is an easy first step: send the skill link to your team, since anyone can watch it without an account. When they're ready for the full course, CBT Nuggets team plans let you assign Project+ to everyone, organize training into team playlists, and track each person's progress and completion through team reporting. If someone else decides on training, share this article with them.
Book a Demo to see how Project+ fits your team's training plan.
Project Life Cycle: Common Questions
What are the project life cycle stages in order?
In CompTIA's model, the project life cycle stages are discovery and concept preparation, initiation, planning, execution, and closing. They run mostly in sequence, although some planning and control work continues throughout the project as conditions change.
How is the project management lifecycle different from the PMI process groups?
Lifecycle phases describe where your project sits on its timeline, and they run mostly in order. The PMI process groups, also called the PMBOK process groups (initiating, planning, executing, monitoring and controlling, and closing), describe the type of work you're doing, and they can repeat inside any phase. You might do planning work during execution, for example, when a change request forces you to update the schedule. Monitoring and controlling is the clearest case: it's a process group, not a lifecycle phase, and it runs across the entire project. Both show up on the Project+ exam, and the free skill covers how they relate.
What's the difference between a project, a program, and a portfolio?
A project is a single temporary effort with a defined end, like a file share migration. A program manages the interdependencies between related projects, such as a migration, a network upgrade, and a phone system replacement that all depend on the same cutover weekend. A portfolio takes a strategic view, asking whether the organization is running the right projects and programs to meet its goals. Knowing which level you're working at tells you who owns which decisions: your project's timeline may be yours to manage, but whether it gets funded next quarter is usually a portfolio-level call. The free skill's Programs and Portfolios lesson walks through each level.
Which project phase gets skipped most often?
Discovery. Under schedule pressure, it’s tempting to move straight from an idea to execution without confirming the project solves the real problem or that the benefit justifies the cost.
Do I need project management experience to start?
Not for the free skill. It starts from the basics, defining what a project is before building up to the five phases. For the exam itself, there's no formal experience requirement, but CompTIA recommends 6 to 12 months of hands-on project management experience.
Can I use Project+ to train my whole team?
Yes. Start your team with the free first skill, which anyone can watch without an account. CBT Nuggets team plans then let you assign the full Project+ course, organize it into team playlists, and track each person's progress and completion.
Start Building Project Management Skills for Free
Project management skills travel with you. Almost every IT role eventually involves a project, and the people who can scope the work, plan around what they don’t control, and close it out cleanly are the ones who get trusted with the next one. Those skills don’t depend on any one tool or vendor, so they keep paying off as the technology around you changes.
This free training on the project management life cycle is where it starts. From there, the full Project+ course takes you through every phase in depth, and team plans bring the same training to everyone you work with.