Many technology vendors publish detailed documentation combining their services or integrating with partners to deliver business capabilities for specific sectors or use cases. These are typically referred to as ‘reference architectures’ or ‘patterns’. Such documents often become recommendations from pre-sales teams, evangelists, or partners. Over time, they can also evolve into training guides, presentations, and even be regarded as universal design choices.
Throughout my career, I have encountered clients who present these documents and request their solution to be “configured exactly as detailed in the reference architecture so it’s rubber-stamped.” While there is logic and merit in following vendor recommendations such as ensuring supportability and maintaining a vendor-aligned configuration this approach can also be a missed business opportunity and a detractor from true solution design.
The Reality of Reference Architectures
A reference architecture is, at its core, another architect’s opinion. Yes, the document may have been developed by a team of experienced professionals, undergone some peer review, and been published under a reputable vendor’s name. However, these architectures are typically generalized to appeal to major business sectors such as automotive or healthcare. While they provide valuable guidance, they are not tailored to a client’s specific needs and should never substitute a thorough understanding of their unique use case.
Every design decision involves impacts or trade-offs whether in terms of risk, operational impact, cost, or performance. While these trade-offs may be deemed acceptable from a vendor’s generalised perspective, a client’s business might have different priorities. Blindly following a reference architecture can result in a solution that meets generic industry benchmarks but falls short of addressing actual business challenges.
The Potential Commercial Bias in Reference Designs
Most solution architects have a commercial focus. The authors of reference documentation may work for the vendor or a close partner, but they may lack direct experience in a client’s sector. Some of these architectures might be based on assumptions rather than real-world deployments, and in some cases, they may even be influenced by commercial incentives rather than purely technical best practices.
Personally, I consider this type of published material as one piece of input in a design process not an absolute truth. Use it as a guideline, take what is useful, and critically assess what does not align with a client’s needs.
What to Consider When Evaluating a Reference Architecture
When reviewing a reference design, always question words like “Validated,” “Proven,” and “Tested.” Consider:
- How was this design validated?
- What were the actual test conditions and metrics used?
- Were the test scenarios comparable to my client’s real-world requirements?
- Was the testing synthetic (i.e., artificial lab scenarios) or based on real operational usage patterns?
Additionally, reference architecture documentation is almost always incomplete when it comes to full project implementation. There will likely be a need to supplement it with additional documentation and configurations. Reverse-engineering these designs for real-world deployment can sometimes be more time-consuming than designing a custom solution from scratch.
The Role of Reference Architectures in Production
Reference architectures can provide valuable insights into reccomended practices for cloud services, but they should never replace a deep understanding of responsibilities, security, logging, and operational processes.
Cloud solutions operate within shared responsibility models, and blindly implementing a reference design without tailoring it to security and compliance requirements can lead to serious issues later in the project lifecycle.
Use Reference Designs Wisely
Reference architectures and validated designs are useful tools, but they should never be treated as definitive solutions. They offer valuable insights into what is possible, but they must be critically analyzed and customized to fit the specific needs of a client.
By doing so, designs are not just compliant with vendor recommendations but also genuinely effective in delivering value to a client’s business.