Worked on enhancing multi-tenant authentication within the SoftwareAG/c8y-docs repository by developing new REST API endpoints to support scalable login options and access control mappings across tenants. Focused on improving SSO capabilities and enabling CRUD operations for login and access mappings, the work addressed the needs of large user bases in enterprise environments. Emphasized clear documentation using Markdown and maintained detailed changelogs to track API changes. Leveraged skills in API development and RESTful services to deliver targeted authentication features, ensuring improved security and flexibility for tenant-specific and global access scenarios without introducing any bug fixes during the development period.