Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Google Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Okta is a platform in the Identity-as-a-Service (IDaaS) category. Okta features include Provisioning, Single Sign-On (SSO), Active Directory (AD) and LDAP integration, the centralized de-provisioning of users, multi-factor authentication (MFA), mobile identity management.