# Technology Radar / Tech Stack Review

## Overview
**Last Updated:** [Date]  
**Review Period:** [Quarter/Year]  
**Next Review:** [Date]

## Instructions
- **Adopt:** Use this technology, it's proven and recommended
- **Trial:** Experiment with this in limited scope
- **Assess:** Watch and evaluate this technology
- **Hold:** Stop using, deprecated, or not recommended for new projects

## Adopted Technologies

### [Technology Name] - [Category]
**Status:** Adopted  
**Version:** [Version]  
**Since:** [When adopted]  
**Rationale:** Why this is our standard  
**Use Cases:** Where and when to use this  
**Constraints:** Any limitations or gotchas  
**Maintenance:** Who maintains it internally?  
**Migration:** How to migrate from alternatives  

## Trial Technologies

### [Technology Name] - [Category]
**Status:** Trial  
**Version:** [Version]  
**Started:** [When]  
**Planned Duration:** [3-6 months typically]  
**Rationale:** Why we're exploring this  
**Trial Scope:** Limited use cases/teams  
**Success Criteria:** How will we evaluate?  
**Next Review:** [Date]  
**Owners:** [Team evaluating]  

## Assess Technologies

### [Technology Name] - [Category]
**Status:** Assess  
**Version:** [Version]  
**Added:** [When]  
**Rationale:** Why this is on our radar  
**Why Not Yet:** Why not adopted yet?  
**Blockers:** What needs to change for adoption?  
**Target Decision:** [When we'll make a decision]  
**Owner:** [Who's tracking this]  

## Hold/Deprecated

### [Old Technology Name] - [Category]
**Status:** Hold (or Deprecated)  
**Version:** [Last version used]  
**Used Until:** [When we stopped using it]  
**Reason for Hold:** Why we're moving away  
**Migration Path:** How to migrate from this  
**Legacy Support:** How long we'll support existing code  
**Migration Timeline:** When legacy support ends  

## By Category

### Languages
- Go (Adopted)
- Python (Adopted)
- Rust (Assess)
- Java (Hold)

### Frameworks & Libraries
- React (Adopted)
- FastAPI (Adopted)
- Django (Hold)

### Databases
- PostgreSQL (Adopted)
- Redis (Adopted)
- MongoDB (Trial)
- Cassandra (Hold)

### Infrastructure & DevOps
- Kubernetes (Adopted)
- Docker (Adopted)
- Terraform (Adopted)

### Monitoring & Observability
- Prometheus (Adopted)
- Grafana (Adopted)
- DataDog (Trial)

## Decision Process

### How Technologies Enter the Radar
1. Proposal by team
2. Initial assessment
3. Review meeting
4. Decision and placement

### Criteria for Adoption
- Solves real problems
- Team expertise available
- Community/vendor support
- Performance and reliability proven
- Integration with existing stack

### Review Schedule
- Quarterly full radar review
- Continuous assessment of trial technologies
- Annual deep-dive on hold technologies

## Historical Changes
- Version history of this document
- Technologies moved in/out each quarter
- Notable decisions and rationale