Foundation Models
General concept of large pretrained AI models that serve as a base for various applications.
Classification
- ComplexityHigh
- Impact areaTechnical
- Decision typeArchitectural
- Organizational maturityIntermediate
Technical context
Principles & goals
Use cases & scenarios
Compromises
- Misuse via generation of misleading content.
- Privacy or licensing violations from training data.
- Excessive dependency on third parties or models.
- Use version control for models and training artifacts.
- Establish continuous monitoring and drift detection.
- Define clear responsibilities for governance.
I/O & resources
- Pretrained model weights
- Curated domain dataset
- Infrastructure for training and inference
- Fine-tuned models for product features
- Evaluation reports and test sets
- Operational artifacts (pipelines, monitoring)
Description
Foundation models are large pretrained AI models that serve as a general-purpose base for many downstream tasks. They are trained on broad data collections and adapted via fine-tuning or prompting for specific applications. Their adoption requires careful governance, data strategy, and security considerations.
✔Benefits
- Faster product development via pretrained capabilities.
- Improved generalization across tasks.
- Efficiency gains through transfer learning and reuse.
✖Limitations
- High compute and memory requirements for training and inference.
- Dependence on large, often proprietary datasets.
- Potential biases and undesired behaviors.
Trade-offs
Metrics
- Inference latency
Average response time for model requests, important for UX.
- Requests cost (Cost per request)
Operational cost per request including infrastructure and model access.
- Accuracy / domain-specific metrics
Performance metrics tailored to specific tasks (e.g. F1, BLEU).
Examples & implementations
Chat assistant with the GPT family
Use of large generative foundation models to answer user questions in real time.
Document analysis with BERT-based models
Fine-tuned models for classification and extraction from business documents.
Code generators based on large models
Automatic code suggestions and templates from pretrained models adapted to developer workflows.
Implementation steps
Define use case and specify data requirements.
Select a pretrained model and set evaluation criteria.
Develop fine-tuning or prompting prototype.
Run rollout with monitoring, tests and governance.
⚠️ Technical debt & bottlenecks
Technical debt
- Monolithic model deployments without modularization.
- Missing automation for retraining and rollbacks.
- Insufficient documentation of training data and pipelines.
Known bottlenecks
Misuse examples
- Generating legally problematic content without moderation.
- Using sensitive internal data for unchecked fine-tuning.
- Use in safety-critical contexts without robustness tests.
Typical traps
- Overestimating generalization capability on niche domains.
- Underestimating ongoing operational costs.
- Poor measurement of quality metrics in product context.
Required skills
Architectural drivers
Constraints
- • Budget limitations for training and inference
- • Legal and licensing constraints for training data
- • Operational overhead for monitoring and security