Start-to-Start (SS)

A dependency where the successor activity cannot begin until the predecessor activity has begun.

Key Points

  • The successor may not start until the predecessor has at least started.
  • Once the predecessor starts, both activities can proceed in parallel.
  • You can add lead or lag to shift the successor's start relative to the predecessor's start.
  • Controls start times only; it does not determine when either activity finishes.

Example

In a software project, begin integration testing 2 days after development starts. This is an SS relationship with a 2-day lag.

PMP Example Question

Activity B can start only after Activity A has started, and both may run concurrently. What dependency is this?

  1. Finish-to-Start (FS)
  2. Start-to-Start (SS)
  3. Finish-to-Finish (FF)
  4. Start-to-Finish (SF)

Correct Answer: B — Start-to-start relationship (SS)

Explanation: SS ties the start of the successor to the start of the predecessor; the successor cannot begin until the predecessor has begun.

Advanced Project Management — Measuring Project Performance

Move beyond guesswork and status reporting. This course helps you measure real progress, spot problems early, and make confident decisions using proven project performance techniques. If you manage complex projects and want clearer visibility and control, this course is built for you.

This is not abstract theory. You’ll work step by step through Earned Value Management (EVM), learning how cost, schedule, and scope come together to show true performance. You’ll build a solid foundation in EVM concepts, understand why formulas work, and learn how performance data actually supports leadership decisions.

You’ll master Work Breakdown Structures (WBS), control accounts, and budget baselines, then apply core EVM metrics like EAC, TCPI, and variance analysis. Through a detailed real-world example, you’ll forecast outcomes, analyze trends, and understand contingencies and management reserves with confidence.

Learn how experienced project managers monitor performance, communicate results clearly, and take corrective action before projects slip. With practical exercises and hands-on analysis, you’ll be ready to apply EVM immediately. Enroll now and start managing performance with clarity and control.

Explore the Course


Build an ICS/OT cybersecurity foundation that fits the real environment

Standard IT controls can disrupt the industrial systems they are meant to protect. Learn how to assess OT risk, design zones and conduits, apply IEC 62443 security levels, use MITRE ATT&CK for ICS, and establish passive asset visibility without risking production. Eight reconstructed incidents connect attacker techniques to the controls that failed, giving you the vocabulary and judgment to make credible security decisions from day one.

Explore the Course