Back in 2007 I had the pleasure of working with people like Eugenio Pace and Gianpaolo Carraro, exploring the unexplored territories of “software delivered like electricity”. We did LitwareHR together, the first software as a service sample application released by Microsoft… At that time I was looking for the topic of my thesis and Eugenio... read more
My interest in Software as a Service (SaaS) born during a trip to Microsoft in 2006. Looking for an interesting topic to elaborate on my graduate thesis, I started digging on different areas and asking different colleagues and friends. Initially, influenced by the work of Arvindra Sehmi, I got interested in agent programming (BDI agents,... read more
Lately the term SaaS became a broader term and now it is called Cloud Computing (see David Chappell’s paper and Wikipedia). It includes the whole paradigm of utility computing + saas + platform as a service + * as a service. I’ve got good feedback on the taxonomy map from the blogsphere (including Jeff Kaplan,... read more
Implementing authentication and authorization mechanisms for applications is something we do over and over. However designing the identity architecture to be adopted across an enterprise is a more challenging task. Based on my experience, reusability ends up happening at the application level as opposed to the enterprise level. So, designing this architecture requires think about:... read more
Thinking about SaaS, for quite some time now, I wanted to share this animated GIF diagram with you (it took lots of cycles to get here:). Make sure to open the post from the browser to see the animated gif. I talked briefly about it in the last RAF (you can see the video in... read more
Update: here is the video of the presentation (thanks to Martin Salias) Couple of week ago the Regional Architect Forum took place on Sheraton Pilar (Buenos Aires, Argentina). Ezequiel Glinsky and Juan Ladetto kindly invited us to talk about a recent case study we did with an insurance company Grupo Sancor Seguros where we created... read more
Reading a post from Diego Dagum’s blog I remembered about an interesting topic related to SaaS. In his article, Diego, talks about an experience he has with a customer that developed an application for multiple customers (multi-tenant). They had a performance issue because they were using shared-schema (i.e. extended fields stored in a separate table... read more
We spent three days with a mix of theory and practice on Software as a Service. The hosters: Fred Chong, Gianpaolo Carraro, Erik Weis and me. The consumers: microsoft internal employees and ISVs. Day 1 SaaS Ecosystem: Gianpaolo presented the different players in SaaS. Multi tenant architecture principles: general architecture principles like data, workflow, security... read more
I’m presenting SaaS with Roberto Schatz, Ramiro Iturregui and Ariel Schapiro at Microsoft Argentina headquarters. The talk will be oriented to ISVs and architects who wants to know about the business model and the architectural technical challenges. We will explore the LitwareHR application published on february. Register here!
A couple of years ago, the platform was not rich enough to create complex security solutions for service oriented applications based on standards. WSE was a half way path. With the advent of WCF we finally have a foundation to build a security subsystem flexible and robust for the enterprise. The following illustration shows the... read more
