The purpose of the project is to create a website where Knowit Experience can present and invite people to their coding events. The work has been carried out by a larger team including project managers, UX designers, supervisors, and an Agile approach has been used. A Headless CMS called Hygraph has been used to create a structure that editors can easily use, and this CMS includes a GraphQL API that the website consumes. The website is created in React with TypeScript to create a secure typed application styled with Sass. The website handles registrations for newsletters and different event lists from users and displays the content of the editors. Several different user flows on the website have been automated using Pipedream to make it easier for editors, including automatic confirmation emails sent to those who register, and editors can easily send emails to specific mailing lists. Structure is also created in the CMS to allow editors to create dynamic forms to collect opinions and information from visitors at an event. The website has been developed with accessibility in mind and has been tested on different browsers and devices. The website is continuously tested for accessibility and correctly validated code throughout the work. The work results in a fully functional website with all intended features. / Projektets syfte är att skapa en webbplats där Knowit Experience kan presentera och bjuda in till deras event Kodkvällar. Arbetet har utförts i ett större team med projektledare, UX-designers samt handledare och arbetssättet har vart Agilt. Ett Headless CMS, Hygraph, har använts för att skapa en struktur som redaktörer enkelt kan använda och med detta CMS ingår ett GraphQL API som webbplatsen konsumerar. Webbplatsen skapas i React med TypeScript för att skapa en säker typad applikation som stylas med Sass. Webbplatsen hanterar anmälningar till nyhetsbrev och olika eventlistor från användare samt visar redaktörernas innehåll. Med Pipedream har flera olika användarflöden på webbplatsen automatiserats för att underlätta för redaktörerna. Bland annat skickas bekräftelsemail automatiskt till de som anmäler sig samt att redaktörer enkelt kan skicka ut mail till specifika maillistor. Struktur skapas även i CMSet för att redaktörer ska kunna skapa dynamiska formulär för att inhämta åsikter och information från besökarna på ett event. Webbplatsen har utvecklats med tillgänglighet i åtanke och den har testats i olika webbläsare samt på olika enheter. Webbplatsen testas kontinuerligt för tillgänglighet samt korrekt validerande kod genom hela arbetet. Arbetet resulterar i en fullt fungerande webbplats med alla tänkta funktioner.

GraphQL is a database handling API created by Facebook, that provides an effective al-ternative to REST-style architectures. GraphQL provides the ability for a client to spec-ify exactly what data it wishes to receive. A problem with GraphQL is that the freedomof creating customized requests allows data to be included several times in the response,growing the response’s size exponentially. The thesis contributes to the field of GraphQLanalysis by studying the prevalence of simple cycles in GraphQL schemas. We have im-plemented a locally-run tool and webtool using Tarjan’s and Johnson’s algorithms, thatparses the schemas, creates a directed graph and enumerates all simple cycles in the graph.A collection of schemas was analysed with the tool to collect empirical data. It was foundthat 39.73 % of the total 2094 schemas contained at least one simple cycle, with the averagenumber of cycles per schema being 4. The runtime was found to be on average 11 mil-liseconds, most of which consisted of the time for parsing the schemas. It was found that44 out of the considered schemas could not be enumerated due to containing a staggeringamount of simple cycles. It can be concluded that it is possible to test schemas for cyclicityand enumerate all simple cycles in a given schema efficiently.

This thesis informs reader about main ways of client-server application design and technologies for building an Application Programming Interface (API). It compares mainly modern approaches - REST and GraphQL, which became recently popular. The final product of thesis is a web application for self-improvement of employees in software company. Application provides features like self-improvement activities management or planning of meetings. Employees management, user registration and log in are obvious. Application uses GraphQL technology as an application interface, Java programming language together with Spring Boot for server implementation and Angular for client implementation. Spring Security framework is used for authentication and authorization, MySQL was chosen for database part.

Organized cybercrime has no borders in cyberspace. This paper suggests a state-of-the-art architected solution for a global Automated cross-border mutual legal assistance system within Digital Forensic (AUTOMLA). The Enterprise framework with technical viewpoint enables international collaboration between sovereign countries Fusion Centers. The evaluation concludes a user interface built in React, middleware Apollo with schema support linked to graph database Neo4j. GraphQL is the preferred application protocol over REST. Fusion Centers API is deployed as federated gateways, and business functions are implemented as PaaS serverless services.  Its intuitive modeling Forensics in graphs, semantic networks enables causality and inference. All suggested elements in AUTOMLA are forming an internationally agreed collaborative platform; the solution for fast cross-border crime investigations. AUTOMLA deployed on the Internet is a subject for threats. Risks are mitigated in design guided by security frameworks. The recommended development method is agile, distributed in between autonomous teams.

This diploma thesis is about real estate market comparative appraisement, statistical approach and how to use software for data gathering and processing in its practical part. Practical part also includes draft of appraising algorithm. In the end of practical part, there are check of application's output and comparison of computed prices to both real traded prices and advertisement prices.

This diploma thesis deals with developing generator for single-page applications. Before developing the application it was necessary to identify problem areas that prevent the development and describe tools that make it easy to create, test, maintain, and deploy single-page applications. Based on the obtained information, the generator Create Sbspa is designed and implemented to efficiently create single-page applications and help to eliminate development problems. It generates configuration and code from semantic templates. The generator is available through a user interface that splits the templates into the groups by applicability. The generator was designed with the need for simplicity and clarity to enable efficient integration with new features. This work also includes design and implementation of the example app which shows features and benefits of the generator.

The goal of this diploma thesis is to design the user interface and implement the information system as a web application. Using the custom implemented library the system communicates with GraphQL server which manages the client data. The thesis describes possible solutions for physical servers automatization. The application provides the application interface to manage virtual servers. Automatization is possible without human interaction. Connection to the virtualization technologies is handled by web interface APIs or custom scripts running in the virtual system terminal. There is a monitoring system built over project components. The thesis also describes the continuous integration using Gitlab tools. Running the configuration task is solved using the Unix CRON system.