DevOps Glossary · Letter S

Secrets Management
Securely storing and controlling access to passwords, API keys, tokens, and other sensitive values so apps and systems can use them without exposing them.
Security
Service Level Agreement (SLA)
A contract that defines expected service uptime, performance, and support response times between a provider and a customer.
Reliability
Service Level Indicator (SLI)
A specific number that measures what users actually experience from a service, like success rate, response time, or error rate.
Monitoring and Logging
Service Level Objective (SLO)
A measurable target for how reliably or fast a service should work over a set time period.
Reliability
SonarQube
Static code analysis platform that scans code for bugs, vulnerabilities, and maintainability issues during development and CI.
CI/CD
SRE (Site Reliability Engineering)
Using software engineering to keep production services reliable, available, and fast.
Reliability
Scaling
Adjusting compute resources up or down to match workload demand, maintaining performance while controlling infrastructure cost.
Scalability
SIEM
Tool for quick threat detection and response.
Security
SSL
SSL secures client server traffic using encryption and authentication to prevent eavesdropping and tampering.
Security
Service Mesh
Infrastructure layer that routes, secures, and observes traffic between microservices without changing app code.
Networking
Software Supply Chain Security
Protecting how software is built and shipped so attackers cannot sneak in bad code or tampered dependencies.
Security
Service Catalog
A searchable list of the services a team offers, with what each one does, who owns it, and how to request it.
Practices and Culture
Software Bill of Materials (SBOM)
Software Bill of Materials (SBOM) is a component list used to track dependencies, licenses, and security risks.
Security
SLSA Provenance
SLSA Provenance is signed build metadata recording an artifact’s source, build steps, and builder for verification.
Security