# Configuration Protocol Support emCA supports standard protocols for automated certificate enrolment and lifecycle operations. * **ACME (Automatic Certificate Management Environment)** Implements ACME APIs for automated enrolment and renewal. Integrates with ACME clients and enforces CA policy and auditing. * **EST (Enrollment over Secure Transport)** Provides enrolment over HTTPS with proof-of-possession. Supports initial enrollment and re-enrolment with client authentication. * **CMP (Certificate Management Protocol)** Supports issuance, renewal, revocation, and key update. Operates over standard transports and aligns with enterprise policy controls. * **SCEP (Simple Certificate Enrollment Protocol)** Enables device enrollment in constrained or network-appliance environments. Supports request/renew flows suitable for MDMs, firewalls, and routers. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://emca.emudhra.com/integrating-emca/configuration-protocol-support.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.