ISO 9000 and SEI CMM are both frameworks related to:

Software-quality frameworks split into two complementary kinds: quality-management standards -- such as the ISO 9000 family, which sets shared vocabulary and fundamentals for a quality-management system, with its companion ISO 9001 specifying the certifiable requirements -- and process maturity models -- such as the SEI Capability Maturity Model, which defines staged levels of software-process maturity. Both target quality assurance and process improvement, not any particular technology.

ISO 9000 is a family of standards published by the International Organization for Standardization that sets out quality-management fundamentals and vocabulary; its companion standard, ISO 9001, specifies the requirements an independent certification body audits an organization against. SEI CMM (Capability Maturity Model, developed by the Software Engineering Institute at Carnegie Mellon) assesses and improves the maturity of an organization's software-development process across five levels: Initial, Repeatable, Defined, Managed, and Optimizing.

• Network protocols (e.g., TCP/IP) govern data communication between systems -- neither ISO 9000 nor CMM addresses communication rules.

• Software architecture (e.g., layered or microservices design) governs a system's structural design -- neither framework prescribes an architecture.

• Development languages (e.g., Java, Python) govern implementation syntax -- neither framework depends on which language a team uses.

So both ISO 9000 and SEI CMM are frameworks related to software quality standards and process improvement -- not to networking, system architecture, or programming-language choice.