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4 templates · Flowchart

Waterfall SDLC Diagrams

The Waterfall model remains a cornerstone of software development life cycle (SDLC) planning, breaking projects into sequential phases: requirements, design, implementation, testing, deployment, and maintenance. A waterfall SDLC diagram transforms this linear process into a clear, actionable visual that teams can align around.

Standard Sugiyama layered DAG + orthogonal routingEngine schematex-flowchartExport SVG · PNG · PDF
How to

How to use a flowchart template.

  1. 01Open the waterfall SDLC template

    Start from a pre-built Waterfall template or a blank flowchart canvas in ChatDiagram.

  2. 02Customize phase boxes

    Drag and drop flowchart shapes for each SDLC phase. Label them (e.g., Requirements, Design) and add descriptions.

  3. 03Add decision gates and deliverables

    Insert diamond shapes for reviews or approvals, and connect them to the next phase with arrows.

  4. 04Style and annotate

    Apply colors, notes, and swimlanes to differentiate teams or highlight milestones.

  5. 05Share and export

    Generate a public link or download your diagram as PNG/PDF for your documentation or presentation.

FAQ

Questions about flowchart templates

What is a waterfall SDLC diagram?

It's a flowchart that illustrates the sequential phases of the Waterfall model—requirements, design, implementation, testing, deployment, and maintenance—along with their deliverables and review points.

Can I add custom phases to my waterfall diagram?

Absolutely. ChatDiagram’s flowchart editor lets you add, rename, or remove phases to match your team’s exact process, whether it’s a strict waterfall or a hybrid approach.

How do I show reviews and rework loops?

You can insert decision nodes (diamonds) between phases. If a phase fails review, draw a line back to the previous phase to indicate rework, keeping the linear flow clear.

Can I collaborate on a waterfall diagram with my team?

Yes. ChatDiagram supports real-time collaboration. Invite team members to edit, comment, and iterate on the same diagram simultaneously.

What’s the best way to present a waterfall SDLC diagram to stakeholders?

Use the presentation mode or export a high-resolution image. Adding swimlanes by team (e.g., BA, Dev, QA) helps stakeholders understand responsibilities at each phase.