Enterprise Architecture Lifecycle
27 June 2013
The Enterprise Architecture team has a lifecycle of its own, but doesn’t operate in a vacuum. The Enterprise Architecture capability fails if it is seen too much as blue sky thinking in an ivory tower.
The Enterprise Architecture team will interact closely with all the other management processes in an organisation, especially the IT management processes. When all these processes work together effectively, an enterprise will be able to successfully manage strategic changes and drive business transformation effectively and efficiently. Often in organisations little thought has been given to the integration of the EA processes to the other management processes. This contributes to making the EA team into an ivory tower, seemingly unconnected with everything else. The aim of this post is to shine some light the EA lifecycle and its interactions.
One of the goals when establishing or maturing an enterprise architecture capability is to make sure that the enterprise architecture a fundamental and normal part of the business-as-usual decision making flow rather than considered as an afterthought.
Too often I have seen major changes apparently started directly at the project initiation phase before there has been any serious appraisal of the business fit, technical fit and feasibility of that change undertaken, not least by the enterprise architects.
The Enterprise Architecture capability is driven by understanding the business strategy and strategic scenarios which drive the business and IT enabled changes in an organisation. It is there to ensure that any strategic change is viable in the future, but it also identifies the dependencies, feasibility, risks, issues, costs, and informs the subsequent investment decisions that need to be made.
The current state and future state enterprise architecture models will be developed (typically using the TOGAF ADM).
In the EA roadmap, the strategic changes will be prioritised and arranged into a meaningful sequence to inform the decisions made by the programme and project portfolio management and before any projects are initiated.
The Enterprise Architecture capability will govern what parts of the future state enterprise architecture are developed and delivered by the projects, and thereafter ensure that the delivered solutions and services remain compliant with it. The compliance stage will also capture and approve any innovations that are identified as useful. The enterprise architecture team and/or a technical design authority will provide design assurance for the projects, to ensure that principles, standards, patterns, policies and guidelines are being followed.
It’s worth noting that the EA lifecycle is not a part of the project solution development lifecycle as many organisations seem to imagine it is, but is a separate lifecycle that operates in parallel at a strategic level. Neither is the EA lifecycle the same as the TOGAF Architecture Development Method.
After a solution has been delivered, the enterprise architecture team will harvest the results in order to update the current state enterprise architecture, to measure performance and to publish a dashboard for the senior management team.
The following diagram illustrates the major stages and processes that are undertaken by an Enterprise Architecture team, for each iteration they undertake.
These Enterprise Architecture processes can be best understood in the wider scope and context of all the processes defined by the COBIT5 framework for the governance and management of enterprise IT. http://en.wikipedia.org/wiki/COBIT http://www.isaca.org/cobit/pages/default.aspx
I’m surprised that COBIT is not used more in UK based organisations, but it is more popular in Europe. I would recommend COBIT5 is used as a broad framework for assessing the risk and value of IT and the governance of all IT management processes.
The following view is broadly based on the COBIT processes, and illustrates the position of the Enterprise Architecture processes relative to the other IT management processes identified by COBIT.
Starting from the Strategy & Vision there is an overall clockwise cycle through all the processes. The Enterprise Architecture capability is responsible or accountable for the processes shown in red, and is consulted and informed about the other processes. The responsibilities will, of course, vary in each organisation and in many cases the enterprise architecture team will be additionally responsible with many more of the Solution Development processes (for example, Select, Acquire, and maintain COTS software products).
In a more mature enterprise Architecture environment, all these processes will be expected to consume and contribute to the knowledge, information and models held in the Enterprise Architecture repository (illustrated in the centre of the diagram). The management dashboard of performance metrics, charts and graphs will be generated from the EA repository.
The above diagram is based on the COBIT processes. The latest version of COBIT5 is more explicit about enterprise architecture than earlier versions were. The following table shows the COBIT5 processes that directly relate to or are supported by an Enterprise Architecture team and an Enterprise Architecture Governance Board.
|APO03||Managing Enterprise Architecture|
|APO02||Define Strategy (in this context this usually means the IT strategy)|
|APO04||Manage Innovation (via the Enterprise Architecture Governance Board)|
|BAI08||Manage Knowledge (via the EA Repository)|
|BAI06||Manage Changes (i.e. Strategic changes and IT enabled Business changes that drive the future state enterprise architecture)|
|MEA03||Monitor and assess compliance with external requirements (via the Architecture Governance Board)|
|APO05||Manage Portfolios (with EA Roadmap)|
|APO011||Manage Quality (via EA Appraisals)|
|APO012||Manage Risk (via EA Appraisals)|
|EDM01||Set and Maintain Governance Framework|
|EDM02||Ensure Value Optimisation|
|EDM03||Ensure Risk Optimisation|
The following table shows who is Responsible, Accountable, Informed or Consulted in regard to the services provided by the Enterprise Architecture team and an Enterprise Architecture Governance Board.
Implementing the EA lifecycle and integrating it with the IT management processes in an organisation will help the Enterprise Architecture capability to avoid the challenges and misperceptions that it is some kind of ivory tower that can be wilfully ignored and disbanded when looking for budget cuts.
Senior management teams will instead come to appreciate the valuable contribution that Enterprise Architecture makes to strategic planning, appraising investments in change, driving business transformations, finding opportunities and innovations, and to understand the value EA has to the organisation as a whole.