Digital Engineering
Treat your APIs like products, not plumbing
An interface nobody governs becomes a liability everybody inherits. We decompose monoliths along business domains and give every service a contract worth building against — versioned, documented and owned — so teams ship independently without breaking each other.
- Contract-first design discipline
- CI/CD across AWS, Azure & GCP
- 24/7 support once services are live
The operating idea
An API is a promise your organization makes
Microservices fail as an architecture fashion and succeed as an ownership model. When each service has a named owner, a published contract and a lifecycle, integration stops being a negotiation and becomes a catalog. That is the difference between an API estate partners want to build on and one your own teams route around.
Our engagements install that operating model alongside the engineering — because decomposition without governance just distributes the monolith's problems across the network.
What "API as product" means in practice
- A named owner accountable for each contract's roadmap
- Documentation and discoverability treated as features
- Versioning policy with published deprecation windows
- Consumer usage analytics informing every change
- Security and rate limits enforced at the gateway, not in code review
- Compatibility checks running automatically in CI/CD
The problems this solves
What an ungoverned service landscape costs
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Every release needs a coordination meeting
When services share databases and undocumented contracts, no team can deploy without checking with three others — the monolith's coupling survived its decomposition.
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Partners integrate slowly and expensively
Onboarding a partner or channel takes months of bespoke work because there is no contract to hand them — only a person who knows how the system behaves.
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Breaking changes arrive unannounced
A field renamed in one service takes down a customer journey two hops away, and the postmortem discovers nobody knew that consumer existed.
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The same capability is built four times
Without discoverability, teams reimplement what already exists — quadrupling the maintenance bill and splitting the data four ways.
How we work
Decomposition as a sequence of safe moves
Map
Domains, coupling, data ownership
Contract
Interfaces designed before code
Govern
Standards encoded in tooling
Extract
Services carved out in order
Expose
Gateway, security, discovery
Evolve
Versioning & deprecation cycles
Capabilities
Engineering and operating model, delivered together
Domain-Driven Decomposition
Service boundaries drawn along business domains and data ownership, sequenced by value.
Contract-First API Design
REST, GraphQL and event contracts specified, reviewed and mocked before implementation starts.
Governance & Lifecycle
Naming, security and deprecation standards enforced by automation rather than committees.
Gateway & Access Control
Authentication, authorization and rate limiting configured for enterprise and partner traffic.
Event-Driven Integration
Kafka-based messaging where asynchronous flows fit the business better than request-response.
Resilience Engineering
Circuit breakers, retries, timeouts and load testing so one slow service cannot cascade.
Why it matters
What changes when contracts do the coordinating
Outcomes above are the design targets of the engagement; your baseline and progress against it are measured within your own delivery metrics.
Technology foundation
The stack behind the contracts
Deliverables
What the program hands over
- Domain & coupling mapWhere the boundaries are and why, with data-ownership calls
- Decomposition sequenceWhich capabilities extract first and what each move unblocks
- API design standardsNaming, security, error and pagination conventions as living templates
- Versioning & deprecation policyThe rules of change, encoded in CI checks
- Running servicesProduction services with contracts, tests and pipelines included
- Gateway configurationAccess control, rate limits and routing under version control
- Service catalogDiscoverable documentation your teams and partners actually use
- Operating-model playbookOwnership, review and lifecycle practices for your organization
Related
Adjacent capabilities
Questions CIOs ask
Before you break up the monolith
In what order should we decompose our monolith?
Sequence by business value and coupling, not by what looks easiest. We start with a domain map, then carve out capabilities that change frequently or block other teams — those pay back first. Shared data is the real constraint, so each extraction includes a data-ownership decision, and the monolith keeps running as the system of record until each service earns that role.
What versioning strategy do you recommend?
Version contracts, not code — and version as rarely as possible. Additive, backward-compatible change is the default; a new major version is a governed event with a published deprecation window and consumer migration plan. We define the policy with you, encode it in review tooling, and make compatibility checks part of the pipeline rather than a committee.
How do you introduce API governance without slowing teams down?
Governance should feel like guardrails, not gates. Standards for naming, security, documentation and lifecycle live in templates and automated checks that run at build time, so most decisions never need a meeting. Human review is reserved for the few choices that genuinely deserve it — new public contracts, breaking changes and cross-domain data exposure.
Do we need to buy an API gateway or management platform first?
No. The contract, ownership and versioning model matters far more than the product choice, and buying tooling first often hard-codes bad habits. We design the operating model, then match it to a gateway — commercial or open source — sized to your actual traffic, security and multi-cloud requirements across AWS, Azure and GCP.
How do you keep service changes from breaking consumers we don't control?
Contract tests run in CI against every consumer relationship we know about, and the deprecation policy protects those we don't — published timelines, usage analytics on old versions, and staged shutdowns. Partners integrate against documented, discoverable contracts rather than tribal knowledge, which is most of the battle.
Find out what your service landscape really looks like
An assessment maps domains, coupling and contract health across your estate — and sequences the decomposition moves worth making first.