Contributed to the spiffe/spire repository by delivering an adopter-focused documentation update that added Keycloak and Vault to the ADOPTERS.md file. This work clarified integration points between these tools and SPIFFE/SPIRE, aiming to streamline onboarding for new deployments and enhance ecosystem visibility. The update was implemented in Markdown, adhering to open source contribution standards by including Signed-off-by and Co-authored-by metadata. No bug fixes were addressed during this period, as the focus remained on documentation quality. The contribution supported future feature development by providing clearer adoption guidance, leveraging skills in documentation and collaborative open source workflows to improve project accessibility.