# Blockchain Architects/Consultants Key Concepts

==== Architect ====
==== Consultant ====
**Use Case**
**Merkle Tree**
**Nonce**
**Proof of Work (PoW)**
**Proof of Stake (PoS)**
**Delegated Proof of Stake (DPoS)**
**SOLO**
**Kafka**
**Zookeeper**
**Proof of Elapsed Time (PoET)**
**Sumeragi / Yet Another Consensus (YAC)**
**Proof of Authority (PoA)**
**Token** --> Should we include types (e.g. utility token, security token, etc.)?
**Fungible**
**Oracle**
**Consortium**

# Blockchain Administrator

==== Administrator ====
**Access Control List**
**Container**
**Orchestration**
**Continuous Integration and Continuous Delivery (CI/CD)**
**Gossip Protocol**
**Install**
**Instantiate**
**Invoke**