Job Summary - CI/CD Glossary Definition
A job summary is custom Markdown a step writes to the $GITHUB_STEP_SUMMARY file, rendered on the workflow run page to present results like test tables or coverage without digging through logs.
How to write one
Append Markdown, for example echo "## Test results" >> "$GITHUB_STEP_SUMMARY". Summaries support tables, links, and images, and each job has its own. It is the recommended way to surface a readable report at the top of a run.